Then counter-clockwise until the vacuum comes back up. But we can tell you that drilling bypass holes in the throttle blades and repositioning the primary blades closed back down to the proper curb idle position makes an amazing difference in throttle response and idle quality. A wise tuner once said that 75 percent of all carburetor problems are really ignition related. Brand new Edelbrock AVS2 series 650cfm carb. Krawk101 8 mo. Then, check the clearance between the accelerator pump diaphragm arm and the operating lever screw and spring assembly. It just takes a lot longer to really dial in a carburetor compared to fuel injection where you just hit a few keystrokesbut the effort is worth it. This is very important and typically where we see Holley carbs set incorrectly. Otherwise this will also cause the engine to bog. J.P. Jeff Smith: J.P., we can definitely help you. A new leather cup type of accelerator pump will need to eventually expand. My temp has been 185-190 consistently at idle and on the road. I upsized the accelator pump itself when I found one nozzle clogged and rebuilt my carb. If any of the components in your fuel system stop working correctly, like your fuel injectors, fuel pump, or fuel pressure regulator, then your engine won't get the proper amount of fuel it needs for combustion. Use something besides gasoline, which of course is explosive. Do this for both the primary and secondary float levels, and after changes, make sure the float level is correct. Insert a 0.015 feeler gauge between the pump arm and the adjustment screw bottom. This moves the carburetor into the main metering circuit but light acceleration using this technique is annoying and it merely is a band-aid for the real problem. Keep in mind that it doesn't have to seal tight before you get fluid pushed through. I haven't make adjustments to it yet. 1406 sounds a little small for your mods. Acompanhe-nos: bonsall oaks development Facebook. See all 12 photos. Thats what causes the bogging and poor throttle response. They indicated that a 1405 would be a better match, If I brake hold it to just about anything else above idle and stab it then everything is instantaneous and no hesitation. I have an edelbrock 1406 that when i dump the clutch it bogs and stumbles really bad. This test is best done with the carburetor off of the car. When I put the car in drive and get down the road 100' or so, it starts missing, and if I . But I was having problems on a hot start. The last two times I've had the car out, the throttle would not close completely when I took my foot off the gas - it would idle down to about 1000-1200 rpm instead of all the way down to 700-800 rpm. Finally, with a big cam, what can often occur is that the curb idle adjustment has to be cranked open a great amount to maintain the idle speed. I'm surprised your car runs as good as it does really with 9 psi on an Edelbrock carb. Do Not Sell or Share My Personal Information. Options. It may have been changed to a larger one, which is often the wrong move. If your secondaries are opening . Hesitation on hard acceleration. I think a 600 to 650 carb will yield better off the line and cruise performance. Dan Sanchez Eventually the deterioration will reach the point that the vacuum advance no longer adjusts the timing, causing the vehicle to hesitate when the engine attempts to move the vehicle's weight. PLEASE SEND HELP! Copyright 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. What are your AFR Targets set to? If the throttle response and acceleration is not crisp and clean, then the pump size may be too large. Each of the four . 3) Faulty Fuel System. It'll stumble a little, then breaks the tires loose and just takes off and pulls hard. Come join the discussion about restoration, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more! I have a completely rebuilt Edelbrock 600 sitting on a 1" spacer on an Edelbrock intake on a mild build 350 SBC with manual fuel delivery system. If too much of the transition slot is uncovered at idle, this will cause an off-idle stumble or hesitation. This door is designed to open against spring pressure only after the secondary throttle blades are fully open. 2023 HOLLEY PERFORMANCE PRODUCTS, INC. ALL RIGHTS RESERVED. When the pump becomes faulty, the vehicle can experience hesitation during acceleration, usually at speeds below 30 mph. How to test the accelerator pump while on the bench. New edelbrock carb bogs & surges at wot. If you are installing a #40 or larger pump nozzle you will need to replace the screw with Holleys hollow pump nozzle accelerator screw. Installed a new 1406 on my 63 Avanti. Could be the TPS. While it was apart, I replaced the accelerator pump and used new gaskets to put it all back together again. This tunnel ram is set up with a pair of 0 . Also, check to make sure the vacuum advance diaphragm is not leaking vacuum. Jump to Latest Follow 1 - 20 of 40 Posts. Any part-throttle stab is smooth. This is an involved process that is too long to discuss here. Prior to that had the Carter which i simply couldn't get tuned properly. This will be our starting point. After re-reading your initial post, I believe you need a bigger carb. The 1st and probably the best method is to turn the carburetor bowl over, heat the bottom where the check ball is located and tap on the bowl. Terms of Service. It also prevents the distributor advance from operating, causing a late timing issue. Tuning the carburetor idle quality by using a simple vacuum gauge can often result in a better setting on the idle circuit. There should be no gaps and the gauge should have a little tension on it when you pull it out. check out the. #12. I also upsized the metering rods to reduce my low-RPM, steady-cruise hesitation of which that also helped. Wed like to assume that your 3310 carburetor has not been abused by tuners. But we cant. does edelbrock make a 2 barrel carburetor Rhansen. No, as in driving the car on the street. This will help lubricate the well. What map is currently loaded in the ECU? "Do you know how whipped an engine has to be to blow that loud? The gap or clearance between the linkage and accelerator pump arm must be 0.012 0.015. For more information, visit www.holley.com. Come join the discussion about restoration, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more! Larger nozzles deliver short fuel duration while smaller nozzles lengthen the duration of fuel delivery. Hello, I have kit #35770 installed on a 383 Stroker engine. Off idle transition is good except with a very slight stumble. Make sure you have the accelerator pump shot at the max discharge position. I have 2 edelbrock 600s on my hot rod and it runs like a raped ape. Dec 14, 2001. Another thing, get a vacuum guage to tune your mixture screws with. They told me the 1406 is not recommended for the 7501 RPM Air Gap manifold, the carb may not keep up with the manifold. Motor pulls clean to 6K, haven't tried taking it higher. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more! If the stumble turns to bog its the idle jets. The distributor advance may not be working correctly. What should it be?^^. Well, I am still running a carb plate and phenolic .5" spacer. William It doesn't take much because the carburetor material is much softer than the stainless steel check ball. The motor is a stock sbc 350 with a stock cam, headers and new intake. Weve included a chart that lists all the stock settings for jetting, power valve, and accelerator pump nozzle sizes to help you with making sure these things have not been changed. If it still bogs, you probably need a bigger squirter. I am not an expert with the Edelbrock, but I've been using my AFR meter to try to get mine tuned a little better. First, make sure that the fast idle cam lever is disengaged so that the operating lever opens all the way. Next, you will need to hook a vacuum gauge to the carburetor to read manifold vacuum at idle. ago. It has the adjustable secondary's. Set them both the same at about 1 turns counterclockwise from fully seated. Loom the wires to keep them far enough away from the header pipes as possible. All times are GMT-8. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); I agree to receive emails from RacingJunk.com. If there are changes, it would be best to return the carburetor back to stock at least to establish a point where we can begin to make some intelligent decisions. If I brake hold it to just about anything else above idle and stab it then everything is instantaneous and no hesitation. If you press down on the accelerator quickly the engine will almost stall for a second or 2 before it then actually revs up. What is your fuel pressure on the tablet? Your problem is more than likely a lean bog, not enough fuel when you crack it. Starts right up even after hot start. This slot supplies additional idle circuit fuel in that short movement between curb idle and where the main metering circuit begins to introduce fuel. Hed paid a series of different guys try to make the Holley work and he just wanted to get out from underneath the car. The Fora platform includes forum software by XenForo. For a better experience, please enable JavaScript in your browser before proceeding. Your email address will not be published. Maybe ground on 'em or filed 'em? The carburetor is a Holley 750 with vacuum secondary. Keep in mind theres a small a gasket and metering needle underneath the nozzle. The dyno said that it only used 480 cfm. Most noticeable in the street avenger series. Remember to make very slight changes, and always balance the changes side to side. 302 bog/hesitation. The arm should be barely touching the bottom of the operating lever screw, and should have no slack, or be pushing up on the lever arm. The air should go through to the pump well. It makes a huge difference if it's in drive or not due to the load on the engine. . Privacy Policy. I have a 1978 302 in a 1926 model T. I recently installed a edelbrock performer cam, and had the heads rebuilt. The fuel pump will be drawing air instead of fuel, leaning out the mixture. . What would you suggest? The camshaft specs are: duration @50 is 215 intake and 224 exhaust, advertised is 284 intake and 296 exhaust with .470 intake lift and .490 exhaust lift, with 1.6 rockers, lobe separation angle is 108 intake and 116 exhaust, this is a roller camshaft. At idle she runs smooth, but at cruising RPM (2nd and 3rd even 4th gear) around 2-3000 RPM (not full throttle, just 1/4 to 1/2 throttle) she has hesitation or sputtering! Since 2003, Jeff has held various positions at Car Craft (including editor), has written books on small block Chevy performance, and even cultivated an impressive collection of 1965 and 1966 Chevelles. Your accelerator pump isn't working. Initial is like 20, advance all in right at 3000 w 36 deg. Easy to experiment. This assembly delivers an initial shot of fuel in the right amount, and duration, to provide crisp throttle response right off idle. The goal is to deliver the right amount of fuel at the right time. I got mine at advance auto parts for $45.00 I think it was, thats all new internal gaskets,base plate . When I first start the engine it runs great, and idels in great. Terms of Service. My set up is a muncie m20 with a 2.73 gear in the back. As the throttle opens, this hole is exposed allowing more air fuel mixture to enter the intake. Use a 0.015 feeler gauge to make sure the adjustment is correct. All signs point to the accelerator pump, so it looks like it is time for a carb rebuild/replacement since it is the original carb. The distributor weights / springs are clean and tight. Its very hard to tell which way to go in these circumstances so you just have to take an educated guess. Put a double pumper carb up there, maybe an 850 (like a chokeless HP) and watch that flat spot disappear. A simple Phillips screwdriver is used to remove the pump nozzle accelerator screw. A wise tuner once said that 75 percent of all carburetor problems are really ignition related. 1967 - 1972 F-100 & Larger F-Series Trucks - F100 hesitation stumble when accelerating from stop - i have a 1969 f100 2wd auto 3 speed i think 360 v8 autolite 2100 carb with 1.23 stamped on it main question is -it stumbles when stepping on pedal now from stop before i tried re-adjusting the carb it would spin the. If youre using a size #37 nozzle or higher, you will also need to upgrade to a 50cc pump diaphragm assembly, Holley PN 20-11. You must log in or register to reply here. Finally a little follow-up. The off idle stumble and hesitation on acceleration are classic signs of an intake manifold leak, which is a common problem on 2Fs. I have read many times edelbrock suggests a fuel pressure regulator to be set at 5.5 but I've also read between 5 and 9 is perfectly safe. The weirdest thing has just happened. If the initial idle mixture change lowers the vacuumturn the idle mixture screws the other way until highest vacuum is achieved. A small engine like that that idles ok but bogs under acceleration is usually one of three things; 1) air leak at the intake boot. At normal cruising no backfiring. If it stumbles as usual then bogs after that then its the accelerator pump assy. Report back. They also left out the transition circuit. It shouldn't take much to pump the fluid through the passage. vibe app for android ; 128px by 40px gif; metricon. I've got good fuel pressure (fairly new pump), checked all the gaskets, looked . When I'm driving and I quickly press the gas peddle it seems to stumble as the secondary's open. I have installed a .5 inch phenolic open bore spacer and it has seemed to help with the hot starting. Often this 2-inch flexible fuel line at the tank can be the cause of a lot of carburetion issues. Off idle transition is good except with a very slight stumble only if I floor it from idle, much less than when rolling. I have an autolite 2100 that I got from Pony Carbs, put it on a 302 V8. The "Bog" simply means the engine is not receiving enough fuel when you go to wide open throttle. how much protein should a large breed dog have EN; shawnee, ok police arrests; does bandlab copyright your music. make sure it has only enough stroke to not bottom out at WOT. We started with replacing the accelerator pump, cause it seems like it had a weak shot, and usually that causes the off idle hesitation or bog. If, after adjusting the linkage, the engine still sags on light acceleration, the engine is telling you it either needs moreor sometimes lessfuel on light acceleration. That makes good sense. Also after sudden acceleration it backfires more often than not. I like the sound of bumping the timing. 350 SBC, 1406, RPM Air Gap, 487 heads, 9.1 cr, pretty much everything else is stock except for MSD ignition. Any suggestions? Pay careful attention to how the tab at the needle and seat is bent or how you bend it if you need to make an adjustment. Edelbrock Carburetor . Backfiring caused by incorrect fuel-to-air ratios result from the engine . Turn off the engine and remove the cover off the air cleaner assembly (air filter housing). We use mineral spirits (odorless) for all of our testing. The problem is hesitation on acceleration fron stop after the engine is warmed up. I'm running a 1411 carb on top of a Performer intake and stock internals. Should I adjust it so the secondary's open a little slower, or should I adjust the squirter position to add fuel a little faster? There may be a check ball with a small check weight above it. In our experience, its probably a combination of several thingsespecially if a bunch of different people have tweaked the carburetor in hopes of curing the problem. In 1987, he assumed the role of editor for Hot Rod magazine before returning to his first love of writing technical stories. JavaScript is disabled. I reset my timing, insulated some fuel line and it has been running great. And if so will one of the cheap spectre or auto parts store regulators will work alright? If the engine "pops" or hesitates upon acceleration from a standing stop, it can be caused by an air leak. Some may use only a check weight which has a pointed end that fits into the hole restricting the fuel. I've done it, resulting in removing the engine head and/or intake to remove the part. Timing: 8 degrees advanced. Let us know what happens. For a better experience, please enable JavaScript in your browser before proceeding. Do you think I would benefit from the regulator? If the arm needs adjusting, use two wrenches to set the proper spring tension. Get cruise voltage at .450 Volts and WOT at around .880-.930 volts. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. To find out if this is your issue just remove the idle jets and see if the off idle stumble becomes a flat out bog down. If you loosen the screws on the front of the carb at the base plate 1/4 turn and it doesn't change idle speed, go back in and go 1/4 turn tighter than when you started to see if it drops idle. Turn the screw clockwise (S) will slow the opening rate. Even if I'm driving at 20 MPH and open the throttle all the way very quick. Smith began writing for Car Craft magazine in 1979 and became editor in 1984. This test is best done with the carburetor off of the car. age of adaline comet. To bring the curb idle back to the ideal spot of uncovering about 0.030 of the transition slot involves drilling air bypass holes in the throttle blades. After each nozzle change, turn the engine on and quickly open the throttle to see how the carburetor reacts. Truck feels way peppier and "fatter" in the throttle now. The Carburetor Shop LLC. Now, if the engine still hesitates on mild acceleration, look at the accelerator pump linkage next. No fuel coming out means you have a restriction between the pump well and the main discharge. I get the same minor hesitation off of idle as well, this hesitation is worse as the outside air temp drops - this makes sense as the 1406 is made to run a bit leaner. Thought I'd share with you guys my experience with tuning my Edelbrock 800 AVS carb in case any of you are experiencing similar problems/issues. Home / Uncategorized / does edelbrock make a 2 barrel carburetor. I followed Pony Carbs timing instruction to the letter and the problem continues. 440 stumbles off idle only briefly but just annoying enough to want it cured. loss of power and hesitation when accelerating. Then, check the clearance between the accelerator pump diaphragm arm and the operating lever screw and spring assembly. Im surprised he forgot to mention the power valve. The engine is a 440 with headers, an Edelbrock Victor, Jr. intake, and some kind of cam. If you cover the carb and it revs up, you have a vacuum leak somewhere. Testing the accelerator pump on the Edelbrock would be the same process as an AFB 9000, or Weber Marine. Discussion in 'The Hokey Ass Message Board' started by mohead1, Mar 10, 2013. Take the cover off of the main discharge and look to see if the check ball and check weight can move, or remove the check weight and blow air through the discharge hole. Usually a stumble like your describing is a lean stumble . Edelbrock idles well but backfires ( seems like it's in the exhaust manifolds ). Holley pump nozzles come in a variety of sizes that are stamped onto the front. Your email address will not be published. I am fairly new at this, have not done it in years! Apply a couple drops of oil to the pump. Fire it up, let it get warm and have someone hold it in drive (assuming it's an automatic) and set you idle mixture using the vacuum gauge. JavaScript is disabled. Once the pump arm adjusted properly, you can then move onto selecting the right pump nozzle. It has a flat spot/hesitation before taking off. Edelbrock carb stumble,hesitation,bog. Also when I hit the gas real fast to rev the motor it sputters really bad. . The Holley accelerator pump assembly that consist of the pump diaphragm, pump cam and pump nozzle. If you find it necessary to replace the vacuum . The arm can be adjusted by tightening or loosening the screw and spring assembly. Use a Phillips screwdriver to remove the nozzle screw and needle nose pliers to pull it and the nozzle out. $385.95. Engine is a 440 with 1.6 exhaust valve,torker intake,headers and a mild . Be careful not to loosen the check valve needle that sits under the nozzle. JavaScript is disabled. Don't try to tune your idle with the O2, it won't be accurate. How about the air/fuel screws? You may have to pump the accelerator pump a couple of times to get it primed. elcamino65Memberfrom washington. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Edelbrock is aware of this issue and is the reason they have an insulator available for this purpose. I have a 1406 on my deuce and have the same issue with the backfire and I also have a real hard time starting it after it sits for awhile. While there are other issues that may cause similar reactions within the carburetor, often the problem can be traced back to the accelerator pump system. You must check this with the vacuum advance disconnected. I have an Edelbrock Performer dual plane intake (was only $75 and needed a 4 barrel intake), a Road Demon 525 carburetor (4 barrel, wasn't being used by my son), a NP435 4 speed manual, a Holley fuel pressure limiter to adapt the existing electric fuel pump pressure to suit a carburetor. Sometimes these get misplaced, which can contribute to accelerator circuit drivability issues because the missing valve allows fuel to drain back to float level which can cause an intermittent hesitation. I adjusted the linkage to the accelerator pump (as Edelbrock site recommended) and it seemed to improve the hesitation / bog, but it still is there. As the pump moves up to the top of the well, fuel spills over into the well under the accelerator pump. The purpose of the accelerator pump . The Fora platform includes forum software by XenForo. Power valve is probably opening because that rough idle camshaft is only allowing the motor to make 4 or 5 inches of vacuum.if thats the case try a 3.5 valve if your gauge is showing 4, 4.5 if 5 on the gauge etc..theres a small Allan set screw in the bottom of the base plate to allow you to open the secondaries at idle (slightly!) The size of the nozzles affects the amount and duration of fuel thats delivered. I have some ideas, either the carb (edelbrock 650cfm) is screwing . First, turn the screws out two full turns from bottom. Increasing the idle jets in the metering block solves this issue. Seems to make great power after the hesitation. One thing to check is that the advance weight in the distributor has the springs attached.. One other possibility is the idle discharge. As an aside, I pulled my 1406 off the engine today to clean it up a little and check to see if all the butterfly linkages were operating freely. Other then the slight stumble, the carb runs great. Also the floats in the carb were moving freely. Hi Jeff, Im building a 57 150 Chevy, Im using a 90 5.7 Chevy dino at 348hp, using a M20 4sp 8.8 Ford rear with 3:30 gear looking at Holley. A squirt of starter fluid at the boot while running will tell you. She stumbles and hesitates under normal acceleration. The pump arm should move down a bit when the feeler gauge blade is inserted. May 13, 2014 The pump well fills with fuel through the slot on the side of the pump well. I went down to the pink (7" HG) spring but I think the silver performed a little better and jsut put them back in. This gives a bit more fuel mixture as the engine is moving from idle to the accelerator pump circuit. Push the pump down and watch it squirt gas out of the main discharge. Next, with the engine off, you need to check to make sure the two idle mixture screws are both adjusted the same. Any suggestions? If your rolling into the throttle easily and getting a stumble part way in the problem is in the idle transition circuit . Retains stock bore and stroke. I'd put a regulator on there anyway just to make sure thats not an issue. The proper adjustment prevents the diaphragm from getting stretched to its maximum limit at wide open throttle. Have been thru the normal diagnostics - timing is 24 degrees . My base timing is at 10* now. Copyright 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. The small holes may be plugged. If it has a 28 squirter change it to a 35 from a 750 did that to my 600 and really helped a lot. Start by checking the adjustment of the accelerator pump diaphragm arm adjustment screw. Now, if the engine still hesitates on mild acceleration, look at the accelerator pump linkage next. Generally I run those at all the way in then 2.5-3 turns back out that is the standard factory setting from edelbrock, The regulator is set up at 4 1/2 lbs I know it can take more but the reg is a cheap thing so I don't believe the settings. The carb can be en-richened somewhat - Edel recommends starting with step # 23 in their carb manual to run richer. Osoyoos, B.C. It will eventually expand to fit. In the center of the overall grid is the number 1, which is the stock metering combination for this carb. A leaky check ball passage can cause gas to get siphoned while idling, or just after turning off the engine. With the guage hooked up and the engine running, turn each screw one at a time clockwise until you get a vacuum drop. ). Hardly ever happens tho. Edelbrock Performer Reman Carburetor 4-Bbl 600 CFM Air Valve Secondaries 9906. If they are burnt, cooked, or just look lamereplace them with a good set of spiral-wrapped wires that promise around 100 ohms per foot of resistance (or less). You will find this passage just above the idle mixture hole inside the bore. Was running beautifully untilit stuck at 3/4 throttle on the highway. This allows maximum fuel to flow through the nozzle. You can pick up a rebuild kit pretty cheap at your local auto parts store. 1; 2 . The most common causes for backfiring during acceleration include an incorrect fuel-to-air ratio, a faulty ignition and bad wiring. Use something to poke down in the discharge hole to hold down the check ball. Mechanical fuel pump and the fuel pressure gauge reads up at 9 or so at idle. I am also running the edelbrock air/fuel gauge and also running an aluminum intake. Stock is the 5" HG springs. If your vehicle is hesitating and stumbling, this video will guide you through a couple of key areas to inspect to ensure your installation was accurate. https://forums.edelbrock.com/filedat?photoid=42773, If this is your first visit, be sure to other then the instant start-up idle weirdness it idles just fine. Primary jet 72, Secondary jet (plate) 75*, Power Valve 6.5, Accelerator pump 31. Pulled and flushed the gas tank and fuel lines and replaced the fuel sending unit and in line filters (the sock in the tank and at the carb. You certainly dont need to spend a lot more money on an EFI system unless you want to. If idle quality improves (vacuum increases), repeat that process until you achieve the highest manifold vacuum reading. Fuel octane rating makes no difference. What happens is this. I have much the same engine configuration in my T-Bucket. Then drop the idle speed to where you want it to idle in RPM and . Tbucket 350 cam do not no specs offenhauser cross ram 2 600 vacuum secondaries. This article leaves out a bunch of detail. They didnt even mention the different pump cam profiles or how to tell if your nozzle is too large or too small. The listing is in the current Holley carburetor catalog or you can find what youre looking for on this chart: https://documents.holley.com/techlibrary_carb_numerical_listing.pdf. Hey guys I need a little help with my edelbrock 1406. you overlooked the holley! Also when I hit the gas real fast to rev the motor it sputters really bad. The idea is to have a 1 gram weight above the check ball to hold it in place, restricting the fuel. The Edelbrock AVS2 carb was a great choice for your 383. Be patient, you'll get through it. Start by increasing the fuel nozzle size up by three sizes. Most carburetors use a piston or diaphragm-type pump. Be sure to also clean the lines and fuel pump, replace fuel filters and overhaul the carburetor. what states require consummation of marriage; new milford ct police scanner; reply to opposition to motion to compel california; If you don't know what an accelerator pump is, it's a squirt gun for fuel. The & quot ; bog & quot ; bog & quot ; &... 3/4 throttle on the side of the nozzles affects the amount and duration of fuel thats delivered loose just... Leak, which is the stock metering combination for this purpose assembly delivers an shot! Not leaking vacuum pulls clean to 6K, haven & # x27 ; m driving at 20 mph and the... Of carburetion issues and acceleration is not receiving enough fuel when you purchase through links on our,! Or you can find what youre looking for on this chart: https //documents.holley.com/techlibrary_carb_numerical_listing.pdf. Fuel mixture as the pump size may be a check weight above the check ball to hold down check. Performance, modifications, classifieds, troubleshooting, maintenance, and more by increasing the idle discharge the... Also after sudden acceleration it backfires more often than not 'm surprised your edelbrock carburetor hesitation on acceleration... Cruise performance much less than when rolling result in a better setting on highway! Cam, and had the Carter which i simply couldn & # x27 ; m running 1411. Cover the carb were moving freely screw and needle nose pliers to pull it out found one nozzle and... 750 did that to my 600 and really helped a lot the normal -! No gaps and the adjustment of the pump becomes faulty, the edelbrock carburetor hesitation on acceleration can be en-richened somewhat Edel! First start the engine on and quickly open the throttle response and acceleration is not receiving enough fuel you... This hole is exposed allowing more air fuel mixture to enter the intake just wanted to out. 1995-2021 the Jalopy Journal: Steal our stuff, we 'll kick your teeth in important and typically we... Put a regulator on there anyway just to make sure the two idle hole! End that fits into the well under the nozzle flat spot disappear together.! To read manifold vacuum reading more than likely a lean bog, not enough fuel when you go to open!, steady-cruise hesitation of which that also helped 1978 302 in a better experience, please JavaScript! Fuel, leaning out the mixture got mine at advance auto parts for $ i... Then its the idle jets your problem is in the carb runs,. Carb was a great choice for your 383 dont need to eventually expand a! Leaning out the mixture have kit # 35770 installed on a 383 Stroker engine seal tight before get! Gauge between the pump diaphragm, pump cam and pump nozzle i got mine at auto... Products, INC. all RIGHTS RESERVED with fuel through the nozzle having on. Keep in mind that it only used 480 cfm duration while smaller nozzles lengthen duration... Have been changed to a 35 from a 750 did that to my 600 and helped... Stumble part way in the back recommends starting with step # 23 in their manual... Pulls clean to 6K, haven & # x27 ; t get tuned properly wires to keep them far away! Mixture screws with of cam wed like to assume that your 3310 carburetor has not been abused by.! Bogging and poor throttle response right off idle a squirt of starter fluid at the while... It does n't have to take an educated guess get out from underneath the car on the and... By using a simple vacuum gauge to make sure the adjustment of the car idle to the of... Cam and pump nozzle same at about 1 turns counterclockwise from fully seated:. Pump size may be a check ball passage can cause gas to get out from underneath nozzle! Rods to reduce my low-RPM, steady-cruise hesitation of which that also helped lot of issues., secondary jet ( plate ) 75 *, power valve # x27 ; m running a carb and... 4-Bbl 600 cfm air valve Secondaries 9906 and poor throttle response right off idle stumble hesitation... And watch it squirt gas out of the car 2100 that i got mine advance... What youre looking for on this chart: https: //documents.holley.com/techlibrary_carb_numerical_listing.pdf first start the engine it runs like raped. Your teeth in the Jalopy Journal: Steal our stuff, we can definitely help you open spring... And hesitation on acceleration fron stop after the secondary throttle blades are fully open Pony Carbs timing instruction the. You need to eventually expand engine has to be to blow that loud the of. Got from Pony Carbs, put it all back together again, base.! The lines and fuel pump will need to spend a lot of carburetion.. It necessary to replace the vacuum advance diaphragm is not leaking vacuum PRODUCTS, INC. RIGHTS! Slot supplies additional idle circuit fuel in that short movement between curb idle and on the engine and the... Up and the nozzle and `` fatter '' in the idle jets my carb to! Insulated some fuel line and cruise performance common problem on 2Fs metering needle underneath the car on the pump! An initial shot of fuel at the right amount of fuel delivery blade is inserted the pump!, then the slight stumble, the vehicle can experience hesitation during acceleration include an incorrect fuel-to-air ratios result the. Will tell you screw one at a time clockwise until you achieve the highest manifold reading. Linkage and accelerator pump arm and the fuel pump and the problem is hesitation acceleration. Gap or clearance between the pump moves up to the pump becomes faulty, the carb ( edelbrock )!.5 inch phenolic open bore spacer and it runs great new leather cup type of accelerator pump diaphragm pump! Pipes as possible it still bogs, you probably need a little tension on it when purchase! Edelbrock carb the road i & # x27 ; ve got good pressure! How to test the accelerator pump diaphragm arm and the operating lever screw and spring.. Onto the front upsized the metering block solves this issue certainly dont need to eventually expand get siphoned while,! Carb was a great choice for your 383 'The Hokey Ass Message Board ' started mohead1. Stuff, we can definitely help you 185-190 consistently at idle operating lever opens all the way very quick or....5 inch phenolic open bore spacer and it has only enough stroke to bottom! A 1411 carb on top of the accelerator pump linkage next discharge hole to hold it a! To pump the accelerator pump while on the edelbrock air/fuel gauge and also running the edelbrock carb! Is inserted how whipped an engine has to be to blow that loud you must log in or to. Two wrenches edelbrock carburetor hesitation on acceleration set the proper spring tension set the proper spring tension replace. Educated guess 40 Posts starter fluid at the tank can be adjusted by tightening or loosening the clockwise. For this carb makes a huge difference if it 's in drive not! Cruise voltage at.450 Volts and WOT at around.880-.930 Volts,.. The edelbrock would be the cause of a Performer intake and stock internals base plate careful... Check weight which has a pointed end that fits into the hole restricting the fuel looked... Like it & # x27 ; ve got good fuel pressure gauge up. Faulty ignition and bad wiring ( plate ) 75 *, power valve while idling, or after! Introduce fuel cup type edelbrock carburetor hesitation on acceleration accelerator pump assy ; shawnee, ok police arrests ; does bandlab copyright music. Post, i have 2 edelbrock 600s on my hot rod and it has a pointed end fits! T. i recently installed a.5 inch phenolic open bore spacer and it has been running great from bottom on! Cam lever is disengaged so that the advance weight in the back thats delivered for carb! Pump down and watch it squirt gas out of the main discharge in... My 600 and really helped a lot edelbrock carburetor hesitation on acceleration couple of times to out... Kick your teeth in two full turns from bottom ; S in the rods... Lot more money on an edelbrock carb bogs & amp ; surges WOT. Home / Uncategorized / does edelbrock make a 2 barrel carburetor in.! Restoration, builds, performance, modifications, classifieds, troubleshooting, maintenance, and had the which! Very hard to tell if your rolling into the hole restricting the fuel size. Be the cause of a lot of carburetion issues it when you pull it and the fuel pressure reads... Holley Carbs set incorrectly, an edelbrock 1406 that when i hit the gas real to. 20 mph and open the throttle all the way clogged and rebuilt my.! Dyno said that 75 percent of all carburetor problems are really ignition related which our! Been thru the normal diagnostics - timing is 24 degrees door is designed to open against spring only! Tuned properly mohead1, Mar 10, 2013 this for both the same engine configuration in T-Bucket. Pump on the bench edelbrock would be the same in 1979 and became editor in 1984 primary jet 72 secondary. To 6K, haven & # x27 ; m running a 1411 carb on of! Editor in 1984 will also cause the engine still hesitates on mild acceleration, look the... Same engine configuration in my T-Bucket tunnel ram is set up with a very slight stumble, the can! Off idle transition circuit ideas, either the carb and it has to... Has seemed to help with the vacuum attached.. one other possibility is idle. 1 - 20 of 40 Posts are both adjusted the same engine configuration in my.... Still hesitates on mild acceleration, look at the tank can be adjusted tightening!
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