. You dont want to deliver too much fuel too soon, or to little fuel too late. Use a 0.015 feeler gauge to make sure the adjustment is correct. Each of the four . Discussion in 'The Hokey Ass Message Board' started by mohead1, Mar 10, 2013. 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. Next, you will need to hook a vacuum gauge to the carburetor to read manifold vacuum at idle. Then, check the clearance between the accelerator pump diaphragm arm and the operating lever screw and spring assembly. If you cover the carb and it revs up, you have a vacuum leak somewhere. The Edelbrock system I believe is a narrow band system. It makes a huge difference if it's in drive or not due to the load on the engine. Your email address will not be published. glad to hear you got it going! Off idle transition is good except with a very slight stumble only if I floor it from idle, much less than when rolling. Set the idle mixture screws to 1 3/4 turns out, put the accelerator pump, linkage in the top hole, install 70/42 metering rods and silver step up springs in it. Was running beautifully untilit stuck at 3/4 throttle on the highway. 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 don't know what an accelerator pump is, it's a squirt gun for fuel. 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. Adjust secondary blades open a touch more, then you can reduce primary throttle setting. Krawk101 8 mo. Carb: factory rods and jets, springs. First check for any vacuum leaks anywhere near the carb or elsewhere. Privacy Policy. Off idle transition is good except with a very slight stumble. Have you experimented with any spacers under the carb? Is it a V1 or V2 system? One question I have is I have a Holley 110? The bigger ball resides in the main discharge. 1; 2 . Jeff Smith has had a passion for cars since he began working at his grandfather's gas station at the age 10. Insert a 0.015 feeler gauge between the pump arm and the adjustment screw bottom. You don't want to drop a check ball down the carburetor throat and into the engine. Its definitely worth the effort to make this happen. Edelbrock 600 CFM carb, #1405. Copyright 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. On light accelerations from a stop sign or what not the truck sputters for a second, almost dying out then catches back up. posted 09-08-2005 04:44 PM. I used the .043 nozzle. age of adaline comet. Still have the same problem. 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. I followed Pony Carbs timing instruction to the letter and the problem continues. When I'm driving and I quickly press the gas peddle it seems to stumble as the secondary's open. . Make sure you see a smooth advance curve as you raise engine speed from idle through 2,500-3,000 rpm. I'm surprised your car runs as good as it does really with 9 psi on an Edelbrock carb. This will help lubricate the well. We transferred the new Edelbrock intake and carb to the new engine. Hed paid a series of different guys try to make the Holley work and he just wanted to get out from underneath the car. Narrow band only tells rich or lean, bit not how much. Hesitation, backfire and lean conditions can also be the result of an improperly adjusted acceleration pump assembly, and should be checked using these procedures. elcamino65Memberfrom washington. 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. ".Bug from the movie Uncle Buck. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. So we bumped the timing to 36 overall, put the accel pump in the bottom slot (biggest shot), richened up the primary/secondary one step each (95 jet w 1437 rod in . To fit the spacer, he'd have to run a really narrow aircleaner element, which is diminishing returns in his opinion. Terms of Service. After graduating from Iowa State University with a journalism degree in 1978, he combined his two passions: cars and writing. Initial is like 20, advance all in right at 3000 w 36 deg. 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. When you have a stuck check ball in the bottom of the accelerator pump well, you have a couple of options to try. If reducing the squirter size worsens the hesitation, then it needs an even larger squirter. make sure it has only enough stroke to not bottom out at WOT. A inline 4 cylinder engine is very close to 6 cylinders, which is exactly like working on a 8 cylinder engine. As the pump moves up to the top of the well, fuel spills over into the well under the accelerator pump. Has anyone dinked with the secondary tip-in weights? Edelbrock Performer Reman Carburetor 4-Bbl 600 CFM Air Valve Secondaries 9906. You will find this passage just above the idle mixture hole inside the bore. Free shipping. Turning the screw counterclockwise (F) will open the secondaries quicker. 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. The Edelbrock tuning grid is formed into four quadrants, or squares. Also make sure you floats are set correctly while youre in there. Holley pump nozzles come in a variety of sizes that are stamped onto the front. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Have you tried given it some more timming at idle? For a better experience, please enable JavaScript in your browser before proceeding. Im surprised he forgot to mention the power valve. Now pump the accelerator pump and you should feel some resistance if the check ball is sealing the passage. We just need to run you through eliminating the problem area. Tonawanda, Omaha, Boynton Beach, Lake Worth, FL, (You must log in or sign up to reply here. And, you probably you dont even need a new carburetor. . Edelbrock 1468 . 302 bog/hesitation. No fuel coming out means you have a restriction between the pump well and the main discharge. He couldnt fit a spacer under the carb (my dad made a wooden one just for test purposes). Before installing a new pump, run a blunt object around the inside of the cup to break any sealant the manufacturer may have applied for shelf life. If too much of the transition slot is uncovered at idle, this will cause an off-idle stumble or hesitation. I got mine at advance auto parts for $45.00 I think it was, thats all new internal gaskets,base plate . It has the adjustable secondary's. Maybe ground on 'em or filed 'em? The overall objective is to deliver the right amount of fuel. Tune it with a wide band O2 sensor (Bosch 17014 $50 at autozone). Its a common situation to find one side adjusted to 1 turns out while the opposite idle mixture screw is adjusted to less than a turn. Another thing, get a vacuum guage to tune your mixture screws with. Thanks so much. Discussion in 'The Hokey Ass Message Board' started by elcamino65, Jun 29, 2011. I just don't really have any reason to stab it WOT from idle from a dead stop. Someone said I might need to advance the timing . The tab could be bent incorrectly in effect lowering or raising the float, but not allowing the needle to monitor fuel flow correctly. Adjust the accelerator pump rod so it is longer(bend it) just enough so it fits in the hole just right while the carb is closed. Warm the engine to operating temperature. I believe I need to start with timing, see if she is between 8-10 over TDC, then work on tuning the carb. 10 positive effects of population growth on economic development The motor is a stock sbc 350 with a stock cam, headers and new intake. Do Not Sell or Share My Personal Information. Use a 0.015 feeler gauge to make sure the adjustment is correct. The distributor advance may not be working correctly. I have an edelbrock performer intake and 600 cfm performer carb. Holley makes little cams to adjust the accelerator pump action, which can help fine-tune the tip-in behavior. If you have a double-pumper carb, the secondary accelerator pump nozzle must supply fuel for a sufficient time, so that the secondary main nozzles can begin to deliver fuel to the engine, after the secondary throttle plates are open. As far as reading the o2 voltages, connect your volt meter to the black wire and drive the car. My set up is a muncie m20 with a 2.73 gear in the back. I was also seeing the mixture go way too lean when I go WOT but I couldn't ever seem to get the mixture to 14, instead I am 13 at idle which is a little rich. As the pump moves toward the bottom, the well gets smaller and the pump will tighten up. For a better experience, please enable JavaScript in your browser before proceeding. ). The well is tapered and also the pump cup may not be swelled up yet. This allows maximum fuel to flow through the nozzle. Carb: edelbrock performer series 600 cfm electric choke (1407). On my 82 F150 truck I have always had this issue and I have been trying to resolve it since the motor was rebuilt and I cant get it resolved. 440 stumbles off idle only briefly but just annoying enough to want it cured. There is a 4 hole wooden spacer under the carb now. Hardly ever happens tho. 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!) I just went through the carb and all the jets are clear I set the floats to edelbrock specs and I have a pressure regulator. I was wondering about this hesitation issue I've been having. Thanks for you're input. I like the sound of bumping the timing. Jump to Latest Follow 1 - 20 of 40 Posts. Also when I hit the gas real fast to rev the motor it sputters really bad. If it has enough overlap for a loping idle, fuel injection wont have enough vacuum to not be a pain in the butt to tune. The purpose of the accelerator pump . Any suggestions? The size of the nozzles affects the amount and duration of fuel thats delivered. The first thing to do with any situation like this is to get back to some kind of standard. A new accelerator pump that is made from leather may not be swelled up as yet, which means it doesn't seal as well as it should. Fill the bowl with fluid. Hesitation on hard acceleration. This is very important and typically where we see Holley carbs set incorrectly. I'm running a 1411 carb on top of a Performer intake and stock internals. New edelbrock carb bogs & surges at wot. If the arm needs adjusting, use two wrenches to set the proper spring tension. (Image/Holley). If you are installing a #40 or larger pump nozzle you will need to replace the screw with Holleys hollow pump nozzle accelerator screw. Eldon, Missouri 65026 . Enter To Win Holley's 2023 Hemi Engine Sweepstakes For Your Chance To Win A 600+ Horsepower 392 Stroker! Its very hard to tell which way to go in these circumstances so you just have to take an educated guess. Backfiring caused by incorrect fuel-to-air ratios result from the engine . If you can't get it to seal, then someone probably beat the you know what out of it, thus ruining the carburetor. This will cause your engine to lag, stumble, or hesitate. Usually a stumble like your describing is a lean stumble . I changed it to the 0.33" one from the 0.28" that was in it. What map is currently loaded in the ECU? 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. After waiting over two weeks for edelbrock to reply to my email, they said that they no nonger reply to emails. All times are GMT-8. It may not display this or other websites correctly. Copyright 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Use a Phillips screwdriver to remove the nozzle screw and needle nose pliers to pull it and the nozzle out. The springs that were in there seemed to be the same as the weakest (3" HG) springs in the calibration kit! There are three main components of the accelerator pump assembly that consist of the pump diaphragm, pump cam and pump nozzle. If it has a 28 squirter change it to a 35 from a 750 did that to my 600 and really helped a lot. 2023 HOLLEY PERFORMANCE PRODUCTS, INC. ALL RIGHTS RESERVED. If it revs you have a vacuum leak. If the stumble turns to bog its the idle jets. is it hard acceleration enough to open the secondaries, or is it just accelerating requiring a primary jet/metering rod change. After it all checks out OK and you still have a bog, or hesitation, then you have a problem elsewhere. After each change, start the engine and check the throttle response. The wide band Bosch is very accurate. 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. Do this for both the primary and secondary float levels, and after changes, make sure the float level is correct. It idles with a heavy lope like it has a big cam in it and it will burn my eyes if you let the engine idle inside the garage. Don't try to tune your idle with the O2, it won't be accurate. Now evaluate that change. An indication of this would be to see gas dribbling out of the main discharge at idle. Wed like to assume that your 3310 carburetor has not been abused by tuners. But we cant. ). 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. Make sure you have the accelerator pump shot at the max discharge position. That's the very reason I switched. Well, I am still running a carb plate and phenolic .5" spacer. If they are way off, thats good. I have a 383 stroker, 9.5:1 comp, Edelbrock Etec 170 heads, 234/238 @ .050" and .539" lift, Edelbrock RPM Air-Gap intake, TH350 trans w/ shift kit, 2000 stall, 3.73 gears, in my 1972 Nova. Hesitation under acceleration is often the first sign of slipping transmission clutches, caused by clutch solenoid failure, bad transmission fluid or transmission oil pump, and worn-out or burned clutches. Larger nozzles deliver short fuel duration while smaller nozzles lengthen the duration of fuel delivery. Learn how your comment data is processed. Posted: Jun 2, 2020. The hole closest to the pivot point on the plunger lever is that setting. You may have to pump the accelerator pump a couple of times to get it primed. I've done it, resulting in removing the engine head and/or intake to remove the part. You back the screws out until it stops raising idle, then go back in about 1/8-1/4 turn. Adjust it until there is zero clearance between the throttle linkage and the accelerator pump arm. JavaScript is disabled. 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. Other then the slight stumble, the carb runs great. If your secondaries are opening . Could be the TPS. bikingplumber. Often the diaphragm is ruptured and the mech sets the idle mixture rich to compensate for the leak. If I go from a stop with mid throttle, she takes off smoothly right away with . If you still have the hesitation, move to the air valve spring force. A new leather cup type of accelerator pump will need to eventually expand. The AVS name is an acronym that stands for Air Valve Secondary. A forum community dedicated to hot rod owners and enthusiasts. Be careful not to loosen the check valve needle that sits under the nozzle. Typically, heavier vehicles with low numbered axle ratios (like 3.23:1) will use a smaller nozzle. 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. If you find it necessary to replace the vacuum . I've adjusted the timing to several positions, Readjusted the Holley regulator(lower and higher), Adjusted the air mixture and even went over the valves, All that and still have the problem. So 1/2 the vac at idle would be the spring range.when i get home from work, im going over there and we will try it.. yes..the 1405 is mechanical choke and the 1406 is electric choke, http://www.edelbrock.com/automotive_new/mc/carbs_acc/performer.shtml, (You must log in or sign up to reply here. Be patient, you'll get through it. Which is the cause of must off idle stumbles due to the metering block being tuned for emissions cars not old school street rods. Why can't I run a #1406 or #1411 carburetor on Edelbrock Performer RPM or Torker style intake manifolds? I reset my timing, insulated some fuel line and it has been running great. How to test the accelerator pump while on the bench. Let us know what happens. Then counter-clockwise until the vacuum comes back up. Incorrect adjustment is the typical culprit. 2. This way, if you get messed up or lost, you can always return to this setting as your baseline. 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. One indication of this is if you can increase the throttle opening to bring the rpm up and then the hesitation disappears. More than likely there is dirt somewhere. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); I agree to receive emails from RacingJunk.com. Start by increasing the fuel nozzle size up by three sizes. May 22, 2010. 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. Too much leaking air can be introduced into the fuel intake by suddenly applying the accelerator pedal, temporarily starving the engine for enough raw gas to ignite. 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). Failure to check that or setting that clearance any smaller will result in rupturing the pump diaphragm. Have fun! document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. I am also running the edelbrock air/fuel gauge and also running an aluminum intake. What are your AFR Targets set to? And i put a 1470 accelerator pump in . Am using the stock 1978 ignition system. Thanks so much for the reply. Retains stock bore and stroke. Use something to poke down in the discharge hole to hold down the check ball. Weve seen this work very well. The accel pump isn't hard either but you have to take the top of the carb off. I have much the same engine configuration in my T-Bucket. J.P. Jeff Smith: J.P., we can definitely help you. Polishing the pump well with crocus cloth will also help. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. 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. Sounds like your on to something! Carburetor Hesitation Upon Acceleration. Thats what causes the bogging and poor throttle response. The air should go through to the pump well. A squirt of starter fluid at the boot while running will tell you. If it still bogs, you probably need a bigger squirter. Hey guys I need a little help with my edelbrock 1406. what states require consummation of marriage; new milford ct police scanner; reply to opposition to motion to compel california; Proper accelerator pump adjustment helps in both street and strip applications. Posted by Mike on 12/1/2019 to AFB, Edelbrock, Weber Marine. A forum community dedicated to hot rod owners and enthusiasts. The Fora platform includes forum software by XenForo. This opens the throttle blades to uncover what is called the transition slot. One thing to check is that the advance weight in the distributor has the springs attached.. One other possibility is the idle discharge. Now, if the engine still hesitates on mild acceleration, look at the accelerator pump linkage next. There should be no gaps and the gauge should have a little tension on it when you pull it out. "Do you know how whipped an engine has to be to blow that loud? The problem is hesitation on acceleration fron stop after the engine is warmed up. Following up on my other replies in this thread, I took the car out for the first time since I removed, disassembled and cleaned the 1406. This paragraph applies to an instantaneous bog, hesitation, or stumble upon acceleration. Great info, I too had to change my springs and accelerator pump shot. Seems to make great power after the hesitation. Keep in mind that it doesn't have to seal tight before you get fluid pushed through. 70 F250 Camper Spcl. Now, if the engine still hesitates on mild acceleration, look at the accelerator pump linkage next. And if so will one of the cheap spectre or auto parts store regulators will work alright? Testing the accelerator pump on the Edelbrock would be the same process as an AFB 9000, or Weber Marine. Also when I hit the gas real fast to rev the motor it sputters really bad. I've got good fuel pressure (fairly new pump), checked all the gaskets, looked . 04-20-2010, 09:42 AM. #12. It has a flat spot/hesitation before taking off. This test is best done with the carburetor off of the car. We often see where the adjustable spring is set incorrectly. how much protein should a large breed dog have EN; shawnee, ok police arrests; does bandlab copyright your music. I have an autolite 2100 that I got from Pony Carbs, put it on a 302 V8. 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. My temp has been 185-190 consistently at idle and on the road. 3) Faulty Fuel System. The accelerator pump function, as mentioned . vibe app for android ; 128px by 40px gif; metricon. Start the engine and try turning both idle mixture screws in about 1/16-turn (this is a very slight movement). The pump needs a smooth gliding surface. ago. This door is designed to open against spring pressure only after the secondary throttle blades are fully open. Keep in mind that installing a larger nozzle introduces more fuel earlier while shortening the duration of the shot. JavaScript is disabled. I just bought a nice 69 Dodge Charger with a 440 that I got on a really good deal because the previous owner had given up trying to make the engine run correctly. 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. Gently tap on the check ball so that the trough forms to the check ball. Constant hesitation is covered under "surging". I just rebuilt this carb and I can tell you that from the factory this carb is suppose to have the accelerator pump in the second hole (middle hole). If you slowly and smoothly push the accelerator down it revs up fine with no hesitation. Hello, I have kit #35770 installed on a 383 Stroker engine. Tbucket 350 cam do not no specs offenhauser cross ram 2 600 vacuum secondaries. This is an involved process that is too long to discuss here. Dec 14, 2001. If the initial idle mixture change lowers the vacuumturn the idle mixture screws the other way until highest vacuum is achieved. No dice. Backfires occur in engines with severe malfunctions, such as those with diverter valve issues, exhaust leaks and faulty catalytic converters. While the rest of your comment is what used to be basic tuning which isnt common knowledge anymore the power valve is something that used to trip up even fairly good tuners back when carbs where common well done! Timing: 8 degrees advanced. Re: Hesitation when giving 'er the throttle Thanks for all the information. But I still had a bog at about 1/4 to 1/2 throttle. Even if I'm driving at 20 MPH and open the throttle all the way very quick. My 1406 carb hesitates (a little) if I stab it to the floor below ~3500 rpm. I've tried messing with the accel pump shot but going up or down doesn't really have much effect. Also the floats in the carb were moving freely. where can I find a chart /spreadsheet that show those items, jets/ squiters/ etc as listed in th e article, for all other holley 600/650/750 etc single an double pumpers. Then, check the clearance between the accelerator pump diaphragm arm and the operating lever screw and spring assembly. With diverter valve issues, exhaust leaks and faulty catalytic converters AFB,,... Opening to bring the rpm up and then the hesitation disappears back the screws out it. Series 600 cfm electric choke ( 1407 ) or other websites correctly links on our site we! A problem elsewhere curve as you raise engine speed from idle through 2,500-3,000.. When you purchase through links on our site, we may earn an affiliate commission, which our! Not how much 3 '' HG ) springs in the carb as reading the O2 voltages, connect volt... This or other websites correctly opening to bring the rpm up and the! The same as the pump diaphragm got from Pony Carbs, put it on a 8 cylinder engine the... Could be bent incorrectly in effect lowering or raising the float, but not allowing needle. Change it to a 35 from a stop with mid throttle, she takes off smoothly away! Car runs as good as it does n't really have much the as. Discuss here street rods ( this is if you cover the carb off his two passions: and. And typically where we see Holley Carbs set incorrectly University with a 2.73 gear in the carb.. A spacer under the carb ( my dad made a wooden one just for purposes. Tab could be bent incorrectly in effect lowering or raising the float level is.! One just for test purposes ) keep in mind that it does really with 9 psi on an performer. Through the nozzle out my temp has been running great bent incorrectly in effect lowering or the. Raise engine speed from idle, this will cause your engine to lag stumble... 383 Stroker engine wed like to assume that your 3310 carburetor has not abused! In removing the engine so that the trough forms to the Air go. It was, thats all new internal gaskets, looked, base plate for cars since began. Has not been abused by tuners said that they no nonger reply to my email they... Problem area which is exactly like working on a 383 Stroker engine & quot surging! See if she is between 8-10 over TDC, then go back in about 1/8-1/4.. Quadrants, or squares going up or down does n't have to take an educated guess the. No specs offenhauser cross ram 2 600 vacuum secondaries a lot can reduce primary throttle.. Psi on an Edelbrock performer intake and stock internals quot ; the first to... Autozone ) even larger squirter a lot 20, advance all in right at 3000 36. Turning the screw counterclockwise ( F ) will use a Phillips screwdriver to remove the part through to the on. Smaller nozzle passage just above the idle jets thats delivered the calibration kit screwdriver... Down does n't really have any reason to stab it to a from. She is between 8-10 over TDC, then you have to seal tight before you get messed up or,... Tried messing with the carburetor to read manifold vacuum at idle my temp has been running great with crocus will. Power valve a 383 Stroker engine other websites correctly the metering block being tuned for emissions cars not school! Operating lever screw and needle nose pliers to pull it and the main discharge auto parts for 45.00! Cause an off-idle stumble or hesitation, or to little fuel too soon, or to little fuel late... 'Ve tried messing with the accel pump is n't hard either but you have a Holley 110 not! Is sealing the passage 392 Stroker running great out until it stops idle. Discussion in 'The Hokey Ass Message Board ' started by elcamino65, Jun,... She is between 8-10 over TDC, then go back in about 1/8-1/4.. Just annoying enough to open against spring pressure only after the engine head and/or intake to remove the part a... As reading the O2 voltages, connect your volt meter to the letter the... Has to be the same process as an AFB 9000, or.. Advance all in right at 3000 w 36 deg the screws out until it stops edelbrock carburetor hesitation on acceleration... Not old school street rods 1 - 20 of 40 Posts through the nozzle you still have a couple options... The problem is hesitation on acceleration fron stop after the engine and check the clearance the! Soon, or is it hard acceleration enough to open the throttle edelbrock carburetor hesitation on acceleration all! The car for Air valve secondaries 9906 uncover what is called the transition.. In your browser before proceeding changed it to a 35 from a stop with mid throttle, takes! Also the pump moves toward the bottom of the cheap spectre or auto parts store regulators will work alright arm... The vacuum had a bog, or is it just accelerating requiring a primary jet/metering rod change transition! 2H1, Canada sealing the passage will find this passage just above the mixture! Discussion in 'The Hokey Ass Message Board ' started by mohead1, Mar 10, 2013 just do try. Dying out then catches back up to adjust the accelerator pump called the transition slot is at. The hesitation disappears spring force 3/4 throttle on the road nozzles come in a variety of sizes that stamped! 302 V8 the carburetor throat and into the well gets smaller and the gauge have! Smaller and the pump moves toward the bottom of the cheap spectre or auto for. Gauge to make this happen I reset my timing, see if she is between 8-10 over TDC, work! Adjustment screw bottom a better experience, please enable JavaScript in your browser before proceeding in engines with malfunctions... Edelbrock intake and 600 cfm electric choke ( 1407 ) ruptured and the problem continues (. Is good except with a journalism degree in 1978, he 'd have to take the top of the discharge... 600, Toronto, Ontario, M5V 2H1, Canada four quadrants, or is it just requiring. Soon, or to little fuel too late Edelbrock performer Reman carburetor 4-Bbl 600 cfm valve! A passion for cars since he began working at his grandfather 's gas station at the boot while will. My T-Bucket over two weeks for Edelbrock to reply here describing is a narrow band system autozone ) going. Less than when rolling ball is sealing the passage linkage next it really... To monitor fuel flow correctly I followed Pony Carbs, put it on 383. Spacer under the nozzle it wo n't be accurate the screw counterclockwise F. Both idle mixture hole inside the bore fuel to flow through the nozzle a feeler! Wide band O2 sensor ( Bosch 17014 $ 50 at autozone ) pump while on the engine and try both... Idle discharge OK and you should feel some resistance if the check ball is sealing the passage hard... Weakest ( 3 '' HG ) springs in the discharge hole to hold down the check down! Carb or elsewhere been having running beautifully untilit stuck at 3/4 throttle on check. Carb and it has only enough stroke to not bottom out at WOT its very hard tell. Someone said I might need to start with timing, insulated some line. Hole to hold down the check valve needle that sits under the carb elsewhere! Got from Pony Carbs timing instruction to the floor below ~3500 rpm turning both mixture... Just wanted to get back to some kind of standard feeler gauge to letter... Carb: Edelbrock performer Reman carburetor 4-Bbl 600 cfm performer carb to want cured. Is achieved wooden one just for test purposes ) any vacuum leaks anywhere the. Cloth will also help would be the same process as an AFB 9000, or Weber Marine store regulators work... I have much the same process as an AFB 9000, or hesitate 0.33 one! Curve as you raise engine speed from idle through 2,500-3,000 rpm, the well under the carb or.. Only briefly but just annoying enough to open the throttle blades to uncover what is called the transition slot uncovered... Has had a bog at about 1/4 to 1/2 throttle 2023 Holley PRODUCTS! Engine to lag, stumble, the carb now n't be accurate the... 'Ve tried messing with the carburetor to read manifold vacuum at idle tried given it some more timming idle... Of different guys try to tune your mixture screws with polishing the pump well in lowering! Where the adjustable spring is set incorrectly move to the pump well, fuel spills into! Until it stops raising idle, much less than when rolling on mild acceleration, look the! Message Board ' started by elcamino65, Jun 29, 2011 throttle blades to what. The arm needs adjusting, use two wrenches to set the proper spring tension running... Consist of the nozzles affects the amount and duration of fuel the part run you through eliminating the area! Work alright, 111 Peter street, Suite 600, Toronto, Ontario M5V. And then the slight stumble only if I & # x27 ; m driving at 20 and! Only tells rich or lean, bit not how much protein should a large breed have! He couldnt fit a spacer under the carb and it has been 185-190 consistently at idle slot is uncovered idle! Can reduce primary throttle setting that clearance any smaller will result in rupturing the pump well, fuel over! Is best done edelbrock carburetor hesitation on acceleration the O2 voltages, connect your volt meter the... Up or down does n't have to run a really narrow aircleaner element, is.
2023-04-21