Holley Fast Idle Cam Sticking

et Pump Orschyøe Throtte Body Gasiet Fast Idle Pick-up Lev*' Lever Screw Aqustment Screw Pump Operat:nç Lever Retaner Throttle Stoo. If it stalls, a couple of shots from the accelerator pump and it will start right up, only to repeat this crap. 3 (30A) – Main Light …. Above about 70 mph, the power valve cuts in. the idle also sounds a tad low, with a larger cam you'll need a little more rpm to keep it running, try setting around 800- 1000 rpm and see what happens. Compare Holley Fuel Bowl Non Stick Gasket - 2 Pack, HO108-92-2 SPO3826923. 16 - DRY FLOAT SETTING Non-Adjustable Type FIG. Keep in mind that in addition to vacuum leaks, a distorted or warped baseplate throttle body can also result in throttle shaft. Then fine turn with 1/4 turns. Clean the jet and screw using the carburetor cleaner as well as the carburetor passages. 6) Turn the ignition off. exposing the fast idle set screw below the choke housing (See Figure 7). trouble with not enough fuel at idle. sket Oscharge Nozze Gas. I also found this Demon/Holley 4150 rebuild kit on Ebay from All State Carburetor with the following small parts that can be used on either carb. As your carburetor looks spotless, I don’t think the fast idle cam is binding. If any of the steps in the cam appear worn or damaged, replace the cam. That 750 carb is big for that motor. Best part was how CHEAP you could get almost all the parts from a. Hey, I just transplanted a 600 holley from a 302 2V to a 351 4V. I've attached a video of what it's doing. The cam also helps you start a flooded engine. Many people are confused about how idle air control valves work. I have an Offy intake and a set of headers on it, other than that the engine is stock. Fast Idle Cam. If the fast idle wasn't so high at first start up, i could live with the 2000 RPM for a minute or two. 3) Dirty idle jet or economizer jet. After the long winter, it seems the choke on my Holley is sticking. 19 - PUMP INT. 73's, MSD ignigtion, 4" K&N, Holley 600, Edelbrock performer and 1" spacer, tri-y headers, custom dual exhaust through 2" pipes, 2 chamber Flormasters and custom interior. When u bump the gas with the choke open it disengages. 16 - DRY FLOAT SETTING Non-Adjustable Type FIG. Idle speed problem - Holley Carb specialist needed. The fast idle cam should not engage at all when the choke is fully open. Makes a load of power and still has a nice sounding idle without effecting the power brakes. I am not using a choke or any fast idle features of the carburetor so it has to run that fast hot for it not to kill when cold. Choke coil rod out of adjustment. 25 turns out with this cam. Is the idle speed set with the set screw the just adjusts the linkage? or an actual idle screw on the carb somewhere? Carb is a holley 600cfm. (4) Next check the adjustment and full operation of the carburetor acceleration linkage. Cruise is typically Holley pig rich, but WOT is spot on at 12. The 112LSA helps to bring the camshafts powerband lower in the rpm band. Many people are confused about how idle air control valves work. Being electric choke, I would look at the fast idle cam falls down under the it's own weight, since if it flips back under acceleration etc, AND doesn't fall down, you get a higher than idle engine speed. (Burgett says that this solution was provided by Holley Tech Support and the repair shop, not Gateway Bronco. Weber supplies them with the primary idle larger than the secondary, WHICH IS STUPID. It seems like something is sticking. The Ford Y-Block V8 1954 – 1964 and beyond By 1948 the famous Flathead Ford V8 had been developed about as far as it could go. Not fast, but they start and idle better, pull more consistently off the bottom and even improved fuel consumption (on the 250). take all of the guesswork out of tuning your Commander 950. Reinstall the Idle Jet, & fully screw in the Idle Mixture Screw, lightly bottoming out the screw and back it off 2 full ‘360 degree’ turns. I can go push the cam down and it kind of pops out of place and the idle goes back to normal. holley blue non-stick metering block gasket 2 pack For Models 2300, 4150, 4160, 4165, 4175 - 2/Pkg holley fast idle cam Models 4150 & 4160 And Choke Kits 45-223. View Details. If grooved or ridged, a new needle would be install. At the moment the heart to my beasty is pumping hard, but not hard enough. The position of the fast idle cam can be adjusted by bending the "L" shaped rod leading down to the cam. Once the engine is fully warmed, the Holley is solid and runs like a champ. Cost? I'll Bill ya. I also found this Demon/Holley 4150 rebuild kit on Ebay from All State Carburetor with the following small parts that can be used on either carb. This new base plate assembly fits 2300 series 350 CFM carbs with 1-1/2" throttle plates marked 107 and Ford kickdown lever. If it bogs down on rapid throttle application, It's the pump cam. If you're right I'll be happily surprised. Off Engine • With fast idle screw on high step of fast. When I revved the engine, the idle dropped to 1000 and the fast idle cam was still engaged. Make sure the high idle cam, on the choke side of the carb, the linkage that has a adjusting screw in it, is coming all the way to the "off" position. The fast idle will not kick down all the way after the engine is warm, it is hanging up on the last step of the arm. To slow the idle, turn the screw counterclockwise. TPS- throttle position sensor tells ecm where the throttle valve is when foot is not on gas pedal. gap too wide loosen fast idle screw. It fast idles at around 1,500 or so but wont kick off fast idle with a throttle quick blip. Adjust choke coil rod. The fast idle solenoid takes clean air from the air cleaner and allows it to bypass the throttle and go directly into the intake manifold. Above about 70 mph, the power valve cuts in. View Details. 1L Crossflow - posted in 6 Cylinder Engines: Hi all, So just need a bit of guidance in regards to a Holley to suit my future engine package. I have not read ANYWHERE that you can change the temp of the Learn model activating and I've read a lot of documents, threads, and posts on Holley EFI forums etc. pull throttle back setting choke. 4) Idle speed set too fast and mixture is too lean (common!). Holley Blue Non Stick Model 4010 Bowl Housing Gasket 9. I also found this Demon/Holley 4150 rebuild kit on Ebay from All State Carburetor with the following small parts that can be used on either carb. Here’s how I do it. I am going to take it out to my dyno guy when i get back from a little 2 1/2 week training exercise at A. If you're right I'll be happily surprised. 5:1 ratio at part-throttle cruise. After the start process, If the idle speed is higher than the target idle then the IAC should begin closing as long as the TPS is below 2%. to be more trouble than they are worth, just me I guess. This makes them require excess choking (which wouldn’t be so bad if the fast idle ramp was curved better). As this is happening, the fast idle cam with graduated notches is also moving, allowing engine speed to gradually step down to @ 1400, then @ 1200 and finally @ 1000 before falling all the way to curb idle once the choke has opened fully. Being electric choke, I would look at the fast idle cam falls down under the it's own weight, since if it flips back under acceleration etc, AND doesn't fall down, you get a higher than idle engine speed. Below are a few circumstances that may cause your idle mixture screws to not function properly along with some possible solutions. You might need to speed it up a little, there are steps on the fast idle cam and once it is off the first step, the idle just might not be fast enough for that in between period from totally cold to warmed up. Two years later I figured out it was the secondaries vibrating open slightly and creating the backfire because it was sucking in air. Sideways Body Sway When You Push On The Side Of My 95 F150 44. engage Havinge trouble reinstalling Rochester carburetor after rebuilding it myself. Holley Two Barrel Complete Base Plate Assembly. BBS and Holley (1 bbl. Readjust engine idle speed if necessary, after idle mixture adjustment. 5) Adjust the idle stop screw so the engine idle speed obtains 550rpm in drive (auto trans) or 650rpm in neutral (manual trans). Remember to replace the vacuum hose from the VOES to the top rear of the carburetor. I forgot you have a choke. It fast idles at around 1,500 or so but wont kick off fast idle with a throttle quick blip. Weber supplies them with the primary idle larger than the secondary, WHICH IS STUPID. Place the fuel line on the carburetor before you place it on the bike. View Details. Dashpots were used to prevent stalling when the gas pedal is suddenly released when braking (on automatic transmission cars), to improve shifting on manual transmission vehicles, and, in later models, to control emissions. You will receive ONE plate assembly. Talked with Holley, they stated the 2. the accel pumb, unless adjusted horribly wrong, shouldn't affect your. I have always found things like chokes, parking brakes, gas gauges, speedometers, etc. Choke valve and/or linkage sticking or binding. Any carburetor that readily comes to mind with a fast idle cam is set up such that BOTH the cam and the secondary lockout are controlled by the opening of the choke. I cannot seem to get my Holley SA 670 into the 14:1 afr range at idle. Accelerator pump cams come in various sizes and are color coded and number coded by Holley. Maybe the spring in the choke housing has changed over time? Anyways, I think the choke needs adjusted, as the fast idle cam is connected to the choke linkage. Mixture screws let you adjust the mixture of this circuit. I've attached a video of what it's doing. holley blue non-stick metering block gasket 2 pack For Models 2300, 4150, 4160, 4165, 4175 - 2/Pkg holley fast idle cam Models 4150 & 4160 And Choke Kits 45-223. So adjust the pump the opposite. WARNING! Check carburetor to be sure there are no leaks or flooding, which might cause a fire. It sounds good at idle but to be honest my old 308-LJ idled better with a crane 288 solid cam and 750DP Holley. As the throttle opens, manifold vacuum drops from a high of around 16-18 InHg down to around 0. Had to rally loosen the primary accel pump to no contact, but still giving shot when throttle first starts to open. in the spark plug hole. trouble with not enough fuel at idle. It’s located on the driver’s side of the TB. if it were me i'd try a carb rebuild, if you see gas leaking out you could have a bad seal somewhere or you could be dumping in so much fuel that its leaking past the throttle shafts. There is an idle circuit in the rear barrels of your Holley, too. Quick ref, while choke in open position and throttle on stop screw. It fits the Ford FE engines which includes the 390, 406, 427 and 428, as well as other sizes. Back in the days of carburetors, idle speed was adjusted by way of an idle speed screw. Vibration was indeed causing a small shot to feed the venturis at that initial fast idle. Do this repeatedly until you are confident of the results. This simple procedure is a great Harley tech tip that applies to all Harley carbs from 1989 to present that use the CV style Harley Davidson carburetor. My Holley 2v on the Loadstar started acting up yesterday after a day of bouncing over rough roads and fields. , check the vacuum opening operation as follows:. To get a 'feel' for this adjustment, turn the screw by half turns clockwise and anticlockwise till you hear the engine speed up and slow down. SPECIAL INSTRUCTIONS FOR ALL CARBURETORS: IDLE ADJUSTING NEEDLES - Tapered portion of needle must be straight and smooth. Idle speed is/should be controlled by the secondary blade position, not the primary as is commonly thought. This tuning manual is designed to. I guess I will start with the 2. Another common issue (still with the choke) is that the fast-idle cam simply gets stuck in a higher position. if they are bouncing. Speeding the idle up prevents the cold engine from stalling. making it much more tamperproof. If you got it too far open, the engine will begin to run out of fuel, and slow down, causing you to slap the pedal to keep it running. These bikes have slightly different carb jetting, but they are all rather lean on the idle circuit. Well, you got your wish with this build of a 550 hp 408ci small block Ford by Ford Performance Solutions featuring Edelbrock Victor Jr. 480 liftcam at 280 at 50. 625 rods, Federal Mogul rod and main bearings, Durabond cam bearings, Melling Oil pump, Edelbrock Performer RPM intake, 850 Holley carburetor, 1 3/4 header, Crower Hydraulic lifters, 85 cc KRE Aluminum D. You might need to speed it up a little, there are steps on the fast idle cam and once it is off the first step, the idle just might not be fast enough for that in between period from totally cold to warmed up. 0 V8, 5 speed Black on Black Southern US car which is very clean and solid Holley Systemex Upper and lower intake Comp Cam 1. Edelbrock FE head intake port. FAST 30507-8 Precision-Flow 50 lb/hr 525cc/min Hig Mr. Just because thay are not connected does not mean that they don't work together. 5) Idle cut-off solenoid not working, or no power to it or no ground to it. IF the idle speed is too high, close the secondary plate a tiny bit(. 11-14-10 06:39 PM - Post# 2004304 In response to NYH1 make sure the metering rods are all the way down at idle. At that point, you can go ahead and snug those screws back up, and that's going to give you a good starting point to make adjustments from. then it idles just under 2000RPM. I've been trying to adjust my Holley 570 carb for days. In fact, the Holley brothers started business way back in 1896 building some of the industry's first performance cars. making it much more tamperproof. 2 step or counterclockwise to position the fast idle screw lower on the No. Here’s how I do it. below it is the idle feed passage. I have adjusted the idle screws already. BBS and Holley (1 bbl. My car has a 218 224 112 cam which is relatively small compared to some setups. 625 rods, Federal Mogul rod and main bearings, Durabond cam bearings, Melling Oil pump, Edelbrock Performer RPM intake, 850 Holley carburetor, 1 3/4 header, Crower Hydraulic lifters, 85 cc KRE Aluminum D. So its not the throttle cable. Then rotate it back slowly until the choke plate just comes closed. Understand mine is a 4160 but they might be a lot alike. So adjust the pump the opposite. I've got it installed now in my 1979 chevy c10 400Chevy small block. One is a brand new Street Avenger and the other is an older 4160. It seems to be idling on 4 cylinders but is ok once its off idle and higher rpm. The engine should idle between 1,600 and 2,000 RPM. Idle / Light Cruise: 14. :thumbdown F*****G carburetor !! Guys I have a 302 stock with carb set up. It's always idling too high,around 1000 rpm +/- after I take the car for a spin. Four corner idle system for precise idle control. Open throttle to allow fast idle screw to clear cam. Then stick a chop stick, wooden dowel rod, ect. I guess I will start with the 2. et Pump Orschyøe Throtte Body Gasiet Fast Idle Pick-up Lev*' Lever Screw Aqustment Screw Pump Operat:nç Lever Retaner Throttle Stoo. Had to rally loosen the primary accel pump to no contact, but still giving shot when throttle first starts to open. If piston is sticking, replace assembly. 69 Suggested Retail $9. Mixture screws let you adjust the mixture of this circuit. I'm thinking it is made for the 2300, but the adaptor lets you use a 38DGAS or Rochester. drilled idle circuit. Joined Aug. 22 - FAST. Talked with Holley, they stated the 2. Let it idle at this speed for approximately 5 minutes. 5:1 ratio at part-throttle cruise. when your foot is completely off the throttle. Is there another adjustment on these I should look at? Everything is clean and lubricated I don't see why it's sticking. Gasket 9136G Phenolic Thermal Insulating Carbu Holley 703-49 Marine Carburetor Rebuild Kit; ACCEL 150823 Performance Fuel Injector; Quick Fuel Technology 3-2000 Non Stick Rebuild Kit Auto Meter 3328 Sport-Comp 2-1/16" 0-2000 PSI Mech BBK 1757 Power Plus 80mm Throttle Body for GM. above it is the idle transfer slot. I guess I will start with the 2. pumps, acc. Saying that using the 1/2 idle vacuum rule/use in a 6. Fast idle serves as a way to help the engine warm up quickly, and give a more stable idle by increasing airflow throughout the intake system which helps to better atomize the cold fuel. Most Holley carbs with a choke use either a mechanical or an electric choke. Moved primary cam back to #1 position and idle cam right in at 800. For high fast idle and slight sticking unscrew fastidle screw. Holley gives pretty extensive setup instructions, but honestly, this thing bolted on and work great right out of the box. Surging idle can be caused by a number of different problems. People will get the idle settings wrong, then blame the carburetor when it doesn’t work properly. What am I missing. Could it be because my power source isnt very good? Suggestions?. In fact, the Holley brothers started business way back in 1896 building some of the industry's first performance cars. Maybe the spring in the choke housing has changed over time? Anyways, I think the choke needs adjusted, as the fast idle cam is connected to the choke linkage. 623-inch on a 113 LSA (PN 54-454-11). Adjust fast idle screw of Rochester carburetors to obtain recommended fast idle speed. Adjust the idle quality screws, and set the idle speed now with the vacuum disconnected and plugged to the distributor. Back in the days of carburetors, idle speed was adjusted by way of an idle speed screw. Fleece Performance FPE-CUMM-CP3-10MM-5. WW3 and WWC3 (2 bbl. If piston is sticking, replace assembly. Turbo and BlowerTopics concerning boosted applications16 Topics · 85 PostsLast post: Dies at idle below operating tempe … · 1 month ago · 69_R-Code Dies at idle below operat …. Moved primary cam back to #1 position and idle cam right in at 800. 0l Engine AMC 258 I6 Engine AMC 304 V8 Engine AX 15 Transmission AX 5 Transmission Axle Upgrades CJ-5 CJ-7 Dana 30 Axle Dana 44 Axle Front Dana 44 Axle Swap Jeep CJ Gauge Jeep Engine Upgrades Jeep Tires Jeep Transmission Rear Dana 44 Axle Swap. Pushing the Holley Shop Truck is a 480 horse hot cam LS3 which is cleverly disguised as a Big Block Chevy to keep the truck’s vintage vibe! Holley’s HP EFI, coil covers and Hooker exhaust. When I rebuilt the carb the prev owner had adjusted the fast idle cam so the car would idle on the fast idle cam. I have a new 355 crate motor with a new 600 CFM 4160 Holley. Screw-in air bleeds offer precision tuning capabilities. Have checked the timing but its at top dead centre (TDC). Cam seems loose on its pivot and end of screw doesn't contact squarely on any of the steps. I cannot seem to get my Holley SA 670 into the 14:1 afr range at idle. As for the camshaft, I ran a Comp Cams Xtreme 4x4 268 cam in the 4. this takes the first step out of the red segmented step down behind the electric choke. The choke linkage also incorporates a fast idle cam (the red plastic item in the image to the right). Being electric choke, I would look at the fast idle cam falls down under the it's own weight, since if it flips back under acceleration etc, AND doesn't fall down, you get a higher than idle engine speed. Guys I have a 302 stock with carb set up. The main jet circuit operates between 25 and 70 mph. 1L Crossflow - posted in 6 Cylinder Engines: Hi all, So just need a bit of guidance in regards to a Holley to suit my future engine package. No fast idle engaged - wound out of the way. Weber supplies them with the primary idle larger than the secondary, WHICH IS STUPID. When I moved the throttle about an inch, the rpms went up, the fast idle cam moved up, and the choke plate moved forward just a little. 21/03/2017В В· I have a Street Avenger 670 less than a year old with an electric choke. I added a small bracket to the front mounting stud and a attached a light coil spring between it and the blade on the TPS. holley blue non-stick metering block gasket 2 pack For Models 2300, 4150, 4160, 4165, 4175 - 2/Pkg holley fast idle cam Models 4150 & 4160 And Choke Kits 45-223. 1L Connecting Rods 502CID CM305XL / 350XL / 350HT TB454XL MP5. See full list on efisystempro. At the heart of this transplanted 429 is a Lunati Voodoo cam to make that perfect lopey idle sound (and some nice power, too). Intake System Leakage, Valve Timing, Or Low Compression Vacuum readings at idle much lower than normal can indicate leakage through intake manifold gaskets, manifold-to-carburetor gaskets, vacuum brakes or the vacuum modulator. You might have to slightly open the throttle for it to be able to move, but just try that to see if the red cam is holding it open. The problem could be with the choke, but more likely the throttle linkage/fast idle cam. Fast Idle Cam; Larger Image. 3) Dirty idle jet or economizer jet. New Rochester Carburetor Parts - Main Metering Jets ( All Are New ) • each jet is pin gauge verified for actual size, by us before being sent out • Sold In Pairs (2 of ea. Fresh 11 to 1 forged 350 lt1 wit trick flow 195 cc 2. We provide a variety of Holley 4010 for your vehicle needs. engage Havinge trouble reinstalling Rochester carburetor after rebuilding it myself. Ok, I think I've figured out the problem, I think it is sticking on fast idle. Everything else is there to support that power and sound, including the Weiand Stealth intake, Holley carburetor, MSD 6-AL ignition, and Hooker Super Competition headers. 0093 inch, and you start losing. Fast Idle Cam (Red) ref Holley 45-376: 45-463 $ 22. 6) Turn the ignition off. Vibration was indeed causing a small shot to feed the venturis at that initial fast idle. Back in the days of carburetors, idle speed was adjusted by way of an idle speed screw. At these times, a 14. holley blue non-stick metering block gasket 2 pack For Models 2300, 4150, 4160, 4165, 4175 - 2/Pkg holley fast idle cam Models 4150 & 4160 And Choke Kits 45-223. Engine starts cold on one crank and comes up on fast idle. We also tried a 350 Chevy equipped with a long-duration cam and a Holley 750-cfm 0-3310 vacuum-secondary carb that suffered from a bad off-idle stumble and a pig-rich 10. ADJUSTING FAST IDLE CAM POSITION - AFB - 4BBL. After setting the butterflies to their correct idle position, any necessary adjustments to the Idle-Eze can be made by screwdriver through the air cleaner stud hole. I'm trying to set the timing on the motor but the motor keeps sticking the RPMs where ever I let of off the throttle. Adjust choke coil rod. It might fit together OK but stll not allow for full, free travel of the lever, cam or linkage rod. Ground that down a bit, put it back together and fired it up. 69 Suggested Retail $9. 21/03/2017В В· I have a Street Avenger 670 less than a year old with an electric choke. Slightly crack the throttle open, unload the fast idle cam, and turn the choke cap clockwise until you see the choke plate open. I can go push the cam down and it kind of pops out of place and the idle goes back to normal. If it drops speed when you move the cam, follow my trick and slice the lowest step off that cam with a razor blade. Check to see if your idle control valve is functioning properly before attempting to replace it. That’s a big mistake. IAC, EGR, EGR controller, MAP, temp sensor, vacuum leaks, O2 etc. Engine uses a Comp Cam Custom ground Hydraulic roller camshaft, Comp Cams Hydraulic roller lifters, PRO Sport Cast Crankshaft, PRO Sport 6. Drop it into "Drive," and it lunges forward, ready to rumble. Is it vacuum secondaries? They may be opening a little and sticking. Looking at a copy of a 4053 parts breakdown 'Holley Carburetion Variable Specifications And Parts' with part numbers that I have had since 1974 indicates (136)41R-539. The fast idle solenoid takes clean air from the air cleaner and allows it to bypass the throttle and go directly into the intake manifold. My Idle mixture screws don’t seem to affect the engines idle? There are many reasons why your idle mixture screws do not affect the engines idle, this is usually caused from a flooding condition. I've been trying to adjust my Holley 570 carb for days. Adjust the mixture to the leaner side of the sweet spot, giving the highest RPM and vacuum and note the readings. If you have had 3 throttle springs on it for a long time, a worn throttle shaft could be the problem. Holley Qft Aed Ccs 45-376 Fast Idle Cam Red Lever Assembly Fits 4010 4011 4150. I have the 390 Holley, Comp Cams 260H and 1. engage Havinge trouble reinstalling Rochester carburetor after rebuilding it myself. If it's open at idle, it will also be open at the trasition to the main system, causing a rich off idle condition. When I pushed the cam down, the idle dropped to 750 rpm. The fast idle cam on a Holley 600 is sticking open. As for the camshaft, I ran a Comp Cams Xtreme 4x4 268 cam in the 4. The engine should idle between 1,600 and 2,000 RPM. 0 AFR We all know what idle is, and when you shift into gear and drive at a low mph this is light cruise. Texas Speed Stage 2, 229/244,. In fact, the Holley brothers started business way back in 1896 building some of the industry's first performance cars. To answer his original question, yes a manual choke Holley has a fast idle cam. The fule pump is a Holley Black electric with 6 1/2 lbs on the preassure side. When you open the throttle fast, it takes time to build vacuum in the venturi. Also, the fast idle speed should be adjustable. WW3 and WWC3 (2 bbl. Holley is dedicated to providing products for our customers that. I talked to holley performance & they said to adjust the acc. The position of the fast idle cam can be adjusted by bending the "L" shaped rod leading down to the cam. Spray the linkage with some lubricant. Part numbers, illustrations, and pictures for the Holley 4180C as used on the 1983, 1984, 1985, and 1986 Ford pickups with the 5. Once the engine has started, the fast idle cam should raise the idle speed, however, if the fast idle is still too low then you can adjust the idle speed screw behind the primary throttle lever. Choke valve and/or linkage sticking or binding. Looking for a little help with my Holley. I am going to take it out to my dyno guy when i get back from a little 2 1/2 week training exercise at A. Would be eliminate the pcv valve if used. So management at Ford Motor Co. anyway, I have an older built 455 it was built with a RAIV cam 6x8 heads and forged pistons with resized BBC rods the heads were shaved and ported I havent had it. (b) On the integral vacuum piston unit, remove cover and visually check piston and vacuum channel. 5, primary jets are 57's and secondaries are 61's. Any carburetor that readily comes to mind with a fast idle cam is set up such that BOTH the cam and the secondary lockout are controlled by the opening of the choke. Using a 1/4” open end wrench, turn the screw clockwise to increase the RPM or counterclockwise to decrease the RPM. I suspect a piece of debris has become stuck in the idle circuit somewhere. exposing the fast idle set screw below the choke housing (See Figure 7). If it drops speed when you move the cam, follow my trick and slice the lowest step off that cam with a razor blade. Once the heat releases the mechanism's tension, the cam comes down by gravity only (at least on some carbs) and if it's a little sticky might not release fully. It fast idles at around 1,500 or so but wont kick off fast idle with a throttle quick blip. On my POS the fast idle only engages when you work the throttle with the choke closed. I talked to holley performance & they said to adjust the acc. I've attached a video of what it's doing. Fast Idle Cam Rate Plunge Sprang Ptate Stud Assembly Choke Spong Sack—a Plate Nut Choke Sousna Gasket Choke Retaner Choke Lirú Choke Ptate Screw Choke and Leve Oscharqe Nozzle (3. It fast idles at around 1,500 or so but wont kick off fast idle with a throttle quick blip. Look down the carb throat and confirm that the primary butterflies are closed (or very near to closed) when the bellcrank is on the idle screw. When you start the car the choke plate should open about 1/8" and the fast idle should be set at the spec it calls for. Holley, Dominator HP Carburetor, 2-Circuit Dominator (1x4 Carb Set-ups), 1050cfm Dominator Contoured venturi inlets, for maximum flow and reduced turbulence. The engine has to be cold. I found on the dyno the secondaries opened quicker and HP cam on quicker At the track I found I was having random poping through the carb on the two step. I can't find a vacuum leak but my brand new engine only pulls 14. 018") slot showing, and try again. Screw, & Lockwasher 214 Fast Idle Cam lever Screw and Lockwasher 215 Fuel Inlet Filter Gasket 216 Choke Diaphragm Assembly - Complete 217 Choke Control Lever Retainer 218 Air Vent Rod Spring 219 Fuel Inlet Filter Spring 220 Fast Idle Cam Assembly. View Details. It sounds good at idle but to be honest my old 308-LJ idled better with a crane 288 solid cam and 750DP Holley. I will have to put an ad in craigslist to see if someone wants to trade. I'm not real familiar with carbs, but I think it's the fast - idle cam. When you open the throttle fast, it takes time to build vacuum in the venturi. Had hesitation all the time, so big cam in the motor, only pulling 9-10 pounds vacuum at idle. 5 InHg at wide-open-throttle (WOT). what am i missing? Ive dialed in the cold start, and idle very well. when your foot is completely off the throttle. not only outperform your expectations, but also are easy to install and tune. Set the idle speed to where the cam needs to idle (as close to the desired final idle speed as possible) and hook up a vacuum gauge and tach. It seems that the red plastic fast idle cam on my aftermarket Holley 2300-7448 carb with electric choke conversion is binding. engage Havinge trouble reinstalling Rochester carburetor after rebuilding it myself. It's powered by a 5. 0L motors with head and cam upgrades. Holley carb idle too fast. put #80 primaryjet,installed metering block#86 secondary, lightest spring, and 37 squirter,played with accelerator pump cam. You might have to slightly open the throttle for it to be able to move, but just try that to see if the red cam is holding it open. Holley 4000 Identification - The carburetor number is located on the back side of the carburetor on the face of the flange. Texas Speed Stage 2, 229/244,. Manual says to adjust fast idle to about 1200-1500 RPM? But which step? the first one? There are five steps in Holley fast idle cam. 258 Carter BBD Idle Problem 42re Transmission AMC 20 Axle AMC 242 4. Any carburetor that readily comes to mind with a fast idle cam is set up such that BOTH the cam and the secondary lockout are controlled by the opening of the choke. A hesitation off idle is a fact of life with big carbs on small motors. Mustang Monthly has a specialized editorial package that covers everything from do-it-yourself recommendations to the history of Mustang. It's always idling too high,around 1000 rpm +/- after I take the car for a spin. when your foot is completely off the throttle. After it was warmed up, I set the idle mixture on all four corners of the carb for best manifold vacuum which is about 11 inches. Also ensure that the cap has 12v if you haven't done so. After the long winter, it seems the choke on my Holley is sticking. I even used to have an older 4150 that did the exact same thing. You should be able to feel a bit of resistance if you push the choke butterfly open with your finger. Increase it slowly, test, repeat until backfire stops. 5 PV will cause a rich condition due to valve opening at cruise load. SPECIAL INSTRUCTIONS FOR ALL CARBURETORS: IDLE ADJUSTING NEEDLES - Tapered portion of needle must be straight and smooth. There may be multiple numbers, but the important one is the LIST number. Browse 51 new homes for sale or rent in San Angelo, TX on HAR. 625 rods, Federal Mogul rod and main bearings, Durabond cam bearings, Melling Oil pump, Edelbrock Performer RPM intake, 850 Holley carburetor, 1 3/4 header, Crower Hydraulic lifters, 85 cc KRE Aluminum D. Current power valve is a 6. Pinned boosters, can't fall into engine. This is a discussion on Throttle Bodies Holley,Fast,NW within the External Engine forums, part of the LSx Technical Help Section category; alright guys I'm looking at throttle bodies, I've always favoured the Nick Williams over the FAST but recentely have heard. 95 HOLLEY CHOKE LEVER (Holley Brand) CUD942 $ 7. If you can't get the engine to idle with the blade in this position (don't move it) - then you open the secondary a bit to add some intake air. Gasket 9136G Phenolic Thermal Insulating Carbu Holley 703-49 Marine Carburetor Rebuild Kit; ACCEL 150823 Performance Fuel Injector; Quick Fuel Technology 3-2000 Non Stick Rebuild Kit Auto Meter 3328 Sport-Comp 2-1/16" 0-2000 PSI Mech BBK 1757 Power Plus 80mm Throttle Body for GM. That carb has the idle adjuster where the carb stud is, so your not really adjusting the idle with the throttle blades. 4) Idle speed set too fast and mixture is too lean (common!). Fast Idle Cam. The lower LSA also creates a slightly rougher idle. With the engine cold, prior to starting, the choke should be closed. try a orange cam in the front and a blue cam in the rear ,,, might try a hollow screw in them too i'd set the idle mix screws 1/4 to 1/2 turn more rich ( out /open ) than max vacume too ,,, if its not a 4 corner carb ,,, find the constant idle feed discharge port in the secondarys ,, and use a sewing pin , and insert the neddle into the hole to. The final specs on the cam were 227/243-degrees duration with lift numbers of 0. WP2094: ALL: THROTTLE SHAFT - Holley model 4150, 3310, 4776, 4777, 4778, 4779, 4780 & 4781 and other similar models with manual or hot air choke: CALL. 081 inch, and Murphy (Sean Murphy from Jet Performance Fuel Systems) says they can be enlarged up to 0. Once the heat releases the mechanism's tension, the cam comes down by gravity only (at least on some carbs) and if it's a little sticky might not release fully. P Hill and stick it on the dyno and try tuning it there and see what happens. Place the fuel line on the carburetor before you place it on the bike. A fully open choke should release the fast idle cam but you may need to tap the gas pedal once for it to drop down. BBS and Holley (1 bbl. Also ensure that the cap has 12v if you haven't done so. Manual says to adjust fast idle to about 1200-1500 RPM? But which step? the first one? There are five steps in Holley fast idle cam. Best part was how CHEAP you could get almost all the parts from a. Once the engine is fully warmed, the Holley is solid and runs like a champ. I've gumoutted the hell out of everything. Dnake; The cold fast idle speed should be around 1700rpm. That carb has the idle adjuster where the carb stud is, so your not really adjusting the idle with the throttle blades. The Idle-Eze is designed to precisely meter an additional source of air to the intake plenum via four milled channels on the top of the baseplate. Should you need information or parts assistance, please contact our Technical Service Department at 1-270-781-9741, Monday through Friday, 7 a. Fuel Level Sight Plug - Holley Holley Fast Idle Cam (Green) Holley Fast Idle Cam (White) Holley Fuel Transfer Tube - (5-1/2") Holley Fuel Transfer Tube - (6-3/16") Holley Fuel Transfer Tube - (7") Holley Fuel Transfer Tube Seals - Holley Metal Diaphragm Spring Repair Plate Holley Pump Cam Kit Pump Passage Tube w/O-Rings - Holley Return Spring. There's probably a rod that connects the choke valve to the fast idle cam. For Idle to 5500 RPM Street-Driven PerformanceDual-Plane Low-Rise Intake w/180 deg. I can idle nicely as low as 750, but 1000 seems “clean” and can smoothly run 14. Bend fast idle rod so screw lightly contacts middle step but slides. Sideways Body Sway When You Push On The Side Of My 95 F150 44. Hows your timing at idle look with the vac advance hooked up? You shouldn't have any vacuum advance at idle. To slow the idle, turn the screw counterclockwise. , check the vacuum opening operation as follows:. Some use an adjusting screw, if this is too far out, it would cause the same problem. There may be multiple numbers, but the important one is the LIST number. when your foot is completely off the throttle. One is a brand new Street Avenger and the other is an older 4160. I talked to holley performance & they said to adjust the acc. The position of the fast idle cam can be adjusted by bending the "L" shaped rod leading down to the cam. 0 from a 1985 Mustang GT, T-5 from the same. It still has a fast idle cam that could be sticking especially since you say "padding the gas pedal quickly" causes it to drop down. Any sticking, binding, or other interference in the throttle linkage could result in uncontrolled engine speed. 95 HOLLEY CHOKE LEVER (Holley Brand) CUD942 $ 7. My car has a 218 224 112 cam which is relatively small compared to some setups. Bought a new 4150-4779 750cfm Holley. My Idle mixture screws don’t seem to affect the engines idle? There are many reasons why your idle mixture screws do not affect the engines idle, this is usually caused from a flooding condition. I've got it installed now in my 1979 chevy c10 400Chevy small block. HLY550-155 QUI3-2002 REP SET Non-Stick Quick Kit 750 Vacuum M4160 RPCS2066 Carburetor Adapter Holley/AFB 4BBL to Q-Jet. To answer his original question, yes a manual choke Holley has a fast idle cam. This tuning manual is designed to. It sounds good at idle but to be honest my old 308-LJ idled better with a crane 288 solid cam and 750DP Holley. As engine warms, the choke opens wider, the cam moves off fast idle and the idle speed drops. The choke pull-off can be seen in the image to the right. A fully open choke should release the fast idle cam but you may need to tap the gas pedal once for it to drop down. FAST 30507-8 Precision-Flow 50 lb/hr 525cc/min Hig Mr. Throttle Shaft and Shaft Bearings. Tuning the idle on a pro flo 2 Pro Flo XT Plus converted to Holley HP. People will get the idle settings wrong, then blame the carburetor when it doesn’t work properly. Shows the approximately "square" opening seen at the transfer slot when the carb is inverted and the throttle is stopped on its "primary idle speed screw". The idle curcuit does much more than just give fuel at idle. only able to find 45. I ended up switching to a manual choke and love it, gives me the control to choke the engine exactly as needed. Weber supplies them with the primary idle larger than the secondary, WHICH IS STUPID. Find great deals on eBay for 4160 holley carb. 73 or higher, go with a double pumper. I tried revving it up and the fast idle cam didn't fall off. If you have a 4 corner idle carb all the blades should be set like the primaries in the pic above. A little tunning up and down the road, timing ajustments. It seems to be idling on 4 cylinders but is ok once its off idle and higher rpm. It works for this carb but not for Holley's that don't have the center idle adjuster. Make sure the choke is opening completely after the engine is warmed up. As the throttle opens, manifold vacuum drops from a high of around 16-18 InHg down to around 0. size) beware others may advertise t…. The only drawback is the electric (only) choke which cools down as soon as you turn off the ignition. I suspect a piece of debris has become stuck in the idle circuit somewhere. Here are the symptoms. instructed its engineers to develop a new engine for the future. Best part was how CHEAP you could get almost all the parts from a. The fast idle cam bumps open the throttle a small amount when the choke is opened, increasing engine speed. Removing stuck discharge nozzles. Best part was how CHEAP you could get almost all the parts from a. A hesitation off idle is a fact of life with big carbs on small motors. Holley Truck Avenger 470 (electric choke) on a 1981 CJ5 with the 258. 3 idle fuel transfer ports located under the “puck. and the carb is NOT on the fast idle cam. I've been trying to adjust my Holley 570 carb for days. 5PV and see how it goes. I've attached a video of what it's doing. 06; Buy It Now Fast Idle Cam -HOLLEY 45-376- CARBURETOR PARTS. Throttle Shaft and Shaft Bearings. So its not the throttle cable. I had this happen once before and it eventually cleared itself up. You will receive ONE plate assembly. when your foot is completely off the throttle. check the gap on the throttle stop screw. You might need to speed it up a little, there are steps on the fast idle cam and once it is off the first step, the idle just might not be fast enough for that in between period from totally cold to warmed up. IF the idle speed is too high, close the secondary plate a tiny bit(. Choke coil rod out of adjustment. This will then kick down the fast idle cam, and now yer stuck there babysitting the thing. Increase it slowly, test, repeat until backfire stops. When the choke is on it will crack the throttle open a bit. The cam is below the choke spring housing. Bought a new 4150-4779 750cfm Holley. This mixture travels across the cross channel where it is bled a second time by air from the second idle air bleed. MODEL 2010, 4010, 4011, 4150, 4160, 4165, 4175 (Non-Marine Only) FIG. A hesitation off idle is a fact of life with big carbs on small motors. The linkage operates a fast-idle cam that keeps the throttle from closing tight. Its electric choke. To get a 'feel' for this adjustment, turn the screw by half turns clockwise and anticlockwise till you hear the engine speed up and slow down. To slow the idle, turn the screw counterclockwise. One of the ways to get a good starting point is simply to loosen up the choke housing screws on the retainer. There may be multiple numbers, but the important one is the LIST number. pull throttle back setting choke. The engine should idle between 1,600 and 2,000 RPM. For any mechanical device to remain in production for nearly I took note however that the Accelerator pump shaft 39 s Neoprene rubber grommet does not seem to fit the quot Acelerator Pump Well quot enough to keep backfeeding or fuel. Holley is dedicated to providing products for our customers that. The curb idle screw is on the driver side of the carb sticking forward toward the front of the engine. I assume this is a 360 engine since that was the one that used the 2245 carb. It's always idling too high,around 1000 rpm +/- after I take the car for a spin. Loosen them up just enough to allow you to rotate the choke cap but not enough to allow it to freewheel. fast idle cam. Compare Holley Accelerator Pump Cam Kit - 8 Piece, HO20-12 SPO3827157. At that point, you can go ahead and snug those screws back up, and that's going to give you a good starting point to make adjustments from. Holley Carburetor parts Fuel Bowl Gasket Non stick bulk. if corrupted can make engine stall after letting of gas pedal too fast, even in reverse. the video makes sense if driving and throttle activation continues to reset if you will the step downs on the red cam. I have adjusted the idle screws already. Show hidden low quality content. 1L Crankshafts 502CID CM305XL / 350XL / 350HT TB454XL MP8. To answer his original question, yes a manual choke Holley has a fast idle cam. Holley Blue Non Stick Model 4010 Bowl Housing Gasket. Maybe the spring in the choke housing has changed over time? Anyways, I think the choke needs adjusted, as the fast idle cam is connected to the choke linkage. That carb has the idle adjuster where the carb stud is, so your not really adjusting the idle with the throttle blades. There is an adjustment screw on the bottom of the carb plate to adjust the secondary plates. After messing around with a few things, I figured out my red plastic idle speed cam on my Holley 4160 carb was getting stuck it seems. if corrupted can make engine stall after letting of gas pedal too fast, even in reverse. It does have a racing cam but it is on the mild side 260 degrees and. You should see the fast idle cam swing into a position where the top step of the cam is engaged by a fast idle lever when you release the throttle linkage ie, the lever sits against the cam, and the lever is connected to the throttle linkage, so the lever moves whenever you move the throttle linkage, and the cam swings to a position that prevents the throttle linkage from rotating fully closed (to the idle speed stop screw). Once the engine starts, the choke should open about 1/8" initially. When using a Holley on a car with a bumpy cam, it is often necessary to screw the idle speed screw in far enough that the ported vacuum slot in the throttle bore is uncovered, producing significant ported vacuum to the distributor vacuum advance at idle. This makes them require excess choking (which wouldn’t be so bad if the fast idle ramp was curved better). For Idle to 5500 RPM Street-Driven PerformanceDual-Plane Low-Rise Intake w/180 deg. Just going to rebuild this carb. Holley Two Barrel Complete Base Plate Assembly. Make sure the choke is opening completely after the engine is warmed up. if they are bouncing. 1L Crankshafts 502CID CM305XL / 350XL / 350HT TB454XL MP8. It fast idles at around 1,500 or so but wont kick off fast idle with a throttle quick blip. I assume this is a 360 engine since that was the one that used the 2245 carb. Fast Idle Cam For Holley Carburetor Models 4150 & 4160 and Choke kits 45-223 and 45-224. 1L Crossflow - posted in 6 Cylinder Engines: Hi all, So just need a bit of guidance in regards to a Holley to suit my future engine package. Gasket 9136G Phenolic Thermal Insulating Carbu Holley 703-49 Marine Carburetor Rebuild Kit; ACCEL 150823 Performance Fuel Injector; Quick Fuel Technology 3-2000 Non Stick Rebuild Kit Auto Meter 3328 Sport-Comp 2-1/16" 0-2000 PSI Mech BBK 1757 Power Plus 80mm Throttle Body for GM. In reality, setting the basic idle on a Holley isn’t difficult. Any carburetor that readily comes to mind with a fast idle cam is set up such that BOTH the cam and the secondary lockout are controlled by the opening of the choke. Ok, I think I've figured out the problem, I think it is sticking on fast idle. I tried revving it up and the fast idle cam didn't fall off. The problem could be with the choke, but more likely the throttle linkage/fast idle cam. I have a 4778-1 700 double pumper, rebuilt with holley trick kit, I want to run. I have always found things like chokes, parking brakes, gas gauges, speedometers, etc. But one twist of the ignition, and the L78 bursts to life with a lumpy idle that suggests big cam overlap. Two years later I figured out it was the secondaries vibrating open slightly and creating the backfire because it was sucking in air. Looking for a little help with my Holley. You might need to speed it up a little, there are steps on the fast idle cam and once it is off the first step, the idle just might not be fast enough for that in between period from totally cold to warmed up. TPS- throttle position sensor tells ecm where the throttle valve is when foot is not on gas pedal. It's powered by a 5. In older carbureted cars, the choke was controlled manually by a Bowden cable and pull-knob on the dashboard. LS3 heads just love these big-split cams. If you got it too far open, the engine will begin to run out of fuel, and slow down, causing you to slap the pedal to keep it running. Understand mine is a 4160 but they might be a lot alike. The carby was dyno-tuned to the 302 and is giving me issues: idles really rough, backfiring alot, revs okay but blows too much smoke with missing when returns to idle. The Magic Stick 3 camshaft is available in your choice of 110 LSA, 111 LSA, 112 LSA, 113 LSA & 114 LSA. Fast & Free Shipping - Lifetime. (2) If adjusted O. Hit it real good with some carb spray and observe it working. To answer his original question, yes a manual choke Holley has a fast idle cam. Many people are confused about how idle air control valves work. The fast idle screw should rest on the No. Feb 1, 2020 - Explore jefflaurin's board "Carburetor Holley", followed by 230 people on Pinterest. Is it vacuum secondaries? They may be opening a little and sticking. I talked to holley performance & they said to adjust the acc. Pushing the Holley Shop Truck is a 480 horse hot cam LS3 which is cleverly disguised as a Big Block Chevy to keep the truck’s vintage vibe! Holley’s HP EFI, coil covers and Hooker exhaust. HLY550-155 QUI3-2002 REP SET Non-Stick Quick Kit 750 Vacuum M4160 RPCS2066 Carburetor Adapter Holley/AFB 4BBL to Q-Jet. Two years later I figured out it was the secondaries vibrating open slightly and creating the backfire because it was sucking in air. You might have to slightly open the throttle for it to be able to move, but just try that to see if the red cam is holding it open. when your foot is completely off the throttle. [ Thanks to Jim Chermack for this information. 19 - PUMP INT. If it stalls, a couple of shots from the accelerator pump and it will start right up, only to repeat this crap. Another common issue (still with the choke) is that the fast-idle cam simply gets stuck in a higher position.