Chevy 350 Bogs On Acceleration


I can get up to highway speed if I take my time doing so but as to merge into traffic the engine will fall on its face. Re: problems with chevy 454 p-30 chasis engine: Don: 2-2-09 : I am having similar problems with my 89 Chevy 454. Bogging down on hard acceleration. Durring light acceleration and at low speeds (city driving 35 mph or so) the truck seeems to run fine. 041 64cc 202/160 heads. 2001 mustang GT with an '03 motor Been having an issue with my car's acceleration. Only does this for a little while when driving after the van has been sitting overnight. It recently developed a hesitation/bog/backfire upon acceleration. Why does a Chevy 350 cut out while accelerating but rev up and idle just fine Acceleration is the same condicition low fuel flow due to the blocked filter not allowing full fuel flow to the. I'd be cruising on the highway and step on it and it would cough and sputter and then clear up. We’d tested plug and wire, so it’s on to the coil. It was running great when I brought itIt was running great when I brought it. Fuel filter has been replaced an. How to Reset a Volvo Computer. higher the rpm and the more throttle into it the harsher the misfire. (1990 Chevrolet C1500) Replaced cam sensor, crank sensor, tps, egr, distributor cap and rotor, ignition control module, timing chain, spark plugs and wires, oxygen sensor. 1997 Mercruiser 5. 7 engine) and I'm going to give it a shot. I got the engine timed to the 6 before TDC GM spec. (very new to carburators) I seem to have a smooth idle and the truck acccelerates okay if done slowly. 7 vortec bogs under load repair. It falls on it's face, and sometimes just stalls. 7 EFI - TBI engine, just shy of 1300 hours on it. If the air is on the car will seem like it’s losing power and sputter. 2000 Silverado 5. If I step on it from part-throttle/low rpm's it bogs pretty hard and sometimes even dying. When the motor is warm it hesitates but barely. I went up and down in jet size until I optimized the mpg. Engine hard to start. Problem is engine starts and idles fine but as soon as you give it gas it dies everytime. I'm having a problem with bogging when the engine is cold. I was thinking of putting in the 50cc diaphram and see if that would solve the problem. But after the first time it did that, i took off down the road and got heavy footed with it, it surged and hesitated during acceleration. 350 backfires through carb Hope somebody can help!Just rebuilt a 1972 chevy 350 with a new crankshaft,edelbrock torquer plus cam,torker manifold,holley carb,. Turbo 350 trans and 3. It idles fine but on acceleration it bogs down pretty bad does it sound more like a fuel problem or distributor. Ok so anyway I have this horrible hesitation/bog/powerless that only happens under load, if in park/neutral (its a auto) I can rev the piss out of it and it doesn't skip a beat. Fuel filter has been replaced an. If I gently press down on the petal I can accelerate, but the moment I try and step on it I get the symptoms described above. chevy forum at Car Dealer Forums; Symptoms are as follows: When first started it runs fine for a few seconds then. Sbc lean bog on acceleration Discussion in ' What I have is a rebuilt small block Chevy 350 bored. System is going lean, and after 20-30 seconds of running lean, then goes into open loop forever. Most times when it happens there is a popping noise. Chevy Truck Forum | GM Truck Club. i believe edelbrock setup these tuning tables on a much larger engine, probably a 350 chev. 42 rear end. Problem CONDITION POSSIBLE CAUSE CORRECTION 5) Ford& Holley Only. The customer believed the fuel filter could have been the issue. A carb that would be too big for them and have a bog if opened too quickly will work great on a chev mill. The transmission fluid level could have caused problems with a hot transmission, the fact it only seems to happen at operating temperature and in the higher RPM range could be float levels off or maybe even a clogged jet. Start at 4:51 if your in a hurry for a solution. No I haven't done that yet. 9 mpg mileage. Unplug the tan/black wire, time the engine to ZERO degrees and reconnect the tan/black wire. I have changed the plug caps rotor and coil on my own I am now having a problem cranking my truck it will not start but when I do eventually get it started it has trouble running it won't stay running and has a hard time moving like it's getting no gas I don't know what is wrong any help at all would be appreciated. Having the timing advanced or retarded will cause problems, including hesitation, bogging or even misfire. On the sea trial it bogged at WOT on hole shot. > Truck is a 1989 ¾ ton with 350 engine. Why is the engine bogging under acceleration? I recently managed to get the moped running properly, albeit for only a short time. Runs good if I > accelerate slowly. I have 2004 chevy Blazer with the 4. It recently developed a hesitation/bog/backfire upon acceleration. Spits and sputters while you press on the gas. I can get up to highway speed if I take my time doing so but as to merge into traffic the engine will fall on its face. Chevy Forums FREE technical assistance for your restoration and repair. I finally found a bad wire connection at the throttle position sensor. Holley carb bog at full throttle I have a small block Chevy 350 with single plane intake, Holley 750 double pumper, 50cc pump, 72 jets in the front & 73 jets in the. from what i can tell about it from what you have said,it may be off in the timing of it,this can make it do this a lot ,it only takes a few degrees to do this,even a little wear in the timing chain can cause this to happen,id start checking this stuff, i think the majority of it can be took out with the timing,good luck,i hope this help,s. 0-liter LQ4 V-8 and had, from Chevy, a base price of $28,145, optioned up to $32,550. 1 Bogging down and fowling cylinders 8 and 7 on port side only: 0: 5. The truck completely bogs down randomly when I accelerate at a steady speed. Made it have shitty acceleration, and spit back through the carb. I'm having an issue I can't resolve with my Tahoe. Secondary Air Injection System Malfunction. 350 backfires through carb Hope somebody can help!Just rebuilt a 1972 chevy 350 with a new crankshaft,edelbrock torquer plus cam,torker manifold,holley carb,. I will try and give some more detail here. 2001 mustang GT with an '03 motor Been having an issue with my car's acceleration. I have a 93 Chevy C1500 4. There is often a backfire or two when this happens. But if I try and mash the pedal the car bogs down. I have changed the plug caps rotor and coil on my own I am now having a problem cranking my truck it will not start but when I do eventually get it started it has trouble running it won't stay running and has a hard time moving like it's getting no gas I don't know what is wrong any help at all would be appreciated. FREE FIX - How to Diagnose and Adjust an A/C Compressor Clutch in Car Truck - Blows Cold Then Warm - Duration: 23:20. Call (217) 862-5352 for more information. New Rochester Carburetor Fits 1974-1977 Chevy Truck 350 454 Eng Manifold Choke. It used to be you could do the job in an hour for $20 Anyway, how do you know the bearing is bad?. com has ranked N/A in N/A and 1,472,333 on the world. now ill keep the throttle in it and it will finally catch up and then wham its like a 4 barrel opening up and off i go. once i hit 65 and i press my pedal it starts to bog down. 7 tbi runs rough cold and Discussion in 'Chevy Trucks' started by russ130, Dec 16, 2008. Oxygen O2 Sensor Circuit Low Voltage (Bank 2, Sensor 1) What does that mean? This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles. There are a couple of spots during acceleration where the car seems to have less power and when you get past them - it seems to have a rush of power - almost to the point of breaking the tires lose. Possible fuel problem, maybe pump/pressure, or dirty injectors, but sounds more like electrical/ignition to me. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. Normal acceleration ok. The truck starts and idles without an issue. I have a 2005 chevy impala and my problem is that when I am at a red light the car will not go forward even though the car is running. Reasons for Poor Acceleration in an Impala by Jen Davis. i checked the timing and its 8* before tdc thats where i set it at. Skip to main content. 1983 Chevrolet Scottsdale V8 305 bogs down under acceleration, Carburetor accelerator pump issue. How to Reset a Volvo Computer. Carburetor rebuild, throwing parts at, and uncertainty as to this truck being sent to the crusher. One more thing, you might have a leaking diaphragm on the vacuum advance of the distributor. I accelerate more to a higher speed to get past this but still sputters and pops. A year worth of head scratching. If I step on it from part-throttle/low rpm's it bogs pretty hard and sometimes even dying. Made me think of carbon'ed up plugs and I dismissed it at that. Internally stock 1978 Chevy 350 with an Edelbrock manifold and carb and dual exhaust in my '53 Chevy. However, chances are good that the problem is caused by something other than the carburetor, such as a large vacuum leak, a lack of compression or a fuel supply problem, such as a kinked or clogged fuel supply hose. No codes were set (other than 12). 7 liter GMC Sputters on acceleration - Chevy Message Forum - Restoration and Repair Help. Turbo 350, 373 posi weld prostars with MT et streets,Next to come 23' aluminum heads. The truck has a 350 crate engine coupled with a Rochester Quadra-Jet 4bbl carb. It can cause bogging down on hard acceleration and can affect the shifting of the transmission. bog when punched from a stop I am running a carb he built on my 350 with vortec heads, headers, cammed up, etc and it's about 780 cfm. I did a TON of research and a lot of impala owners have this. " Automobiles are decisive instruments by nature, traversing the Earth in, as much as possible, a straight line from Point A to Point B. 1997 Mercruiser 5. the standard Chevy cam (the cam. Now, Holley EFI products power these cars and are dominating the performance world. throttle it bogs, grumbles and sometimes backfires (through the intake I think) but then it takes off like a dragster. I’ve checked the timing and it’s set at +2 degrees. As soon as I hit the gas engine bogs down. 3 engine is that it doesn't idle well, it's loud and makes awkward noises. (very new to carburators) I seem to have a smooth idle and the truck acccelerates okay if done slowly. Why does my Chevy Malibu hesitate during acceleration, and. com: chevy inline 6. I ran a datalog with WinALDL and the only thing that stood out to me were a bunch of rich flags. Edelbrock is the most respected name in performance. Engine Hesitates, Stumbles, Lacks Normal Power The computer uses this information to determine how much fuel is needed to maintain the correct air/fuel mixture, and when extra fuel is needed if the throttle suddenly opens wide. In early fall the truck started making what I can only describe as a mild and inconsistent "stutter" upon accelerating between 40-50 MPH. fits 265 283 305 307 327 350 383 400 396 402 427 454 472 502 260 289 302 351w 347 352 360 390 406 427 428 429 460 351c 351m 400m 273 318 340 360 361 383 400 413 426w 440 455 330 326 engines with valve covers with 1 1/4" breather holes. Paid a boatload of money to have them tune-up the engine including rebuilding the carb. 1995 Chevy 1500 1/2 Ton Truck (350, 5. 7L TBI intermittently stumbles/stalls at idle, and frequently falls flat on acceleration down the road. (1990 Chevrolet C1500) Replaced cam sensor, crank sensor, tps, egr, distributor cap and rotor, ignition control module, timing chain, spark plugs and wires, oxygen sensor. If your vacuum advance canister works like the one I just bought, limiting only the advance point and not the actual advance, then you will likely have issues at part throttle acceleration from too much advance. Re: Chevy 305 has rough idle at 8 degrees timing but gets smooth at 16 degrees - 600 I thought that too. All that I could find was that it was a 600 cfm carb. I know you guys must be sick of all my questions but it's almost time to go back to school and i need this thing working. chevy forum at Car Dealer Forums; Symptoms are as follows: When first started it runs fine for a few seconds then. 0-liter LQ4 V-8 and had, from Chevy, a base price of $28,145, optioned up to $32,550. It's caused by a lack of spark which can be either the ECU's fault (on EFI cars), or the coil on pretty much any car. Roadstar MOTOOS 18493 3HP High Torque Mini Starter Fit for Chevy Chevrolet SBC 350 BBC 454 Dual Inline 9 Tooth Red. Unlike the New Beetle, an impractical fashion statement of a car, the (Real) Beetle eschewed style for utility. Engine runs great but Bogs Down New Topic (350 Mercruiser)got to the dock and put it in netural, all kinds of power with no load. However in terms of high-RPM function, it falls well short of ideal. I have a 2005 chevy impala and my problem is that when I am at a red light the car will not go forward even though the car is running. The same tune setting that might bog like crazy in an Imperial or a T&C Wagon will not bog in a 440 Dart with 4:10 gears and a 3500 stall converter. My 350 Chevy pops out the tailpipe at wide open throttle. 8 (K) engine with TBI. In other words when accelerating normally the engine will randomly bog down as if it's mis-firing. chevy forum at Car Dealer Forums; Truck runs great, but recently when the engine comes off the enriching circuit. I've fiddled and fiddled with the accelerator pump (installed new parts adjusted and adjusted) and it still does it. Sounds like a machine gun. I have a 2004 F-150 5. Yet under load, the engine could bog, backfire, and run like poo. How much does Engine hesitates during acceleration Inspection cost? Get an estimate instantly. My 94 chevy truck with a 350 tbi hesitates, for example if im at a stop light then when i go to accelerate to say 1/10th throttle for about 1 Second then go to 3/10 it takes like 2-3 seconds to respond to more throttle and it all most like cuts out but once it responds it goes like it should. 0 Mercruiser Alpha 1 2001 stingray "Bogging Issue" 6: 3. acceleration bogging down 5 answers. It will accelerate fine if I apply the pedal like normal such as at a green light. and that's only under heavy acceleration or while doing 80mph down the interstate. Chevy Truck Forum | GM Truck Club. Unplug mass air flow sensor restart truck and drive to see if helped. Or a plugged exhaust. The best way to describe problem is that the engine bogs down and sometimes stalls when I increase the throttle from a trolling speed. Edelbrock Sputtering and Bog at WOT Acceleration! 350 c. the standard Chevy cam (the cam. Idles roughly, with very loud knock (more like a banging). My vortec 350 starts right up idles fine and accelerates only as long as I stay under 2000 to 2200 rpms. I have changed entire distributor system and carb and fuel pump. I have a 100 gph Holley fuel pump. Chevy 305ci v8 idles fine but stumbles on acceleration. 5V, believed normal. 1988 c1500 with 350 bogging down on acceleration. So I bought my 07 3. i just got the truck about 4 monthes ago and it had a jasper motor put in it in 2004 so its got 65,000 miles on it. Edelbrock Sputtering and Bog at WOT Acceleration! 350 c. Please post if you fined the fix as I will if I do. I have changed the plug caps rotor and coil on my own I am now having a problem cranking my truck it will not start but when I do eventually get it started it has trouble running it won't stay running and has a hard time moving like it's getting no gas I don't know what is wrong any help at all would be appreciated. This involves a process of elimination, usually starting from the simple, easy-to-check items, then moving on to more difficult items in logical sequence. The truck starts, idles, and revs normally and when accellarating slowly everything works just fine, but once you get past half throttle it falls on its face and acts like it has a clogged fuel filter or bad fuel pump. i should have bought this wideband years ago. The TBI and engine are stock. Ok so anyway I have this horrible hesitation/bog/powerless that only happens under load, if in park/neutral (its a auto) I can rev the piss out of it and it doesn't skip a beat. A year worth of head scratching. Model specific subject matter experts, classified ads and more. No codes were set (other than 12). I have a '97 k1500 with a 350 and 4l60e automatic. I'm thinking it's a valve out of adjustment. 4 GSI/DP Volvo Penta, 454 engine 1998 27 foot Doral, well last week I idled out of the bay which it ran just fine for about five miles then I pulled back to do a little trolling, after an hour I decided to pick it up and move to another spot and noticed that I couldn’t get on plan or accelerate over 2. Made me think of carbon'ed up plugs and I dismissed it at that. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. Why does my Chevy Malibu hesitate during acceleration, and. As soon as I try to give it a little more juice or jab the throttle, the falls on its face, sometimes revving back up for a second before bogging down again. I own a '98 Chevy 1500 with the 5. Chevy 305ci v8 idles fine but stumbles on acceleration. Question about my holley carb. 1994 Chevy C1500 5. Any suggestions are appreciated. Why is the engine bogging under acceleration? I recently managed to get the moped running properly, albeit for only a short time. 7 engine) and I'm going to give it a shot. I have taken the TBI unit apart and soaked it in cleaner solution, did the kit with the diaphragm, same thing. 7L 350 TBI with 109k miles on it. What could be the issue?. Admirably, the Chevy was the lightest car of the three, but that wasn’t enough to overcome its handicap of no intermediate gear, and delivered the longest acceleration runs and the worst fuel mileage. I changed > plugs, rotor, and cap. Had recent coolant leaks from thermost. 4L TBI Back Fires at WOT C/K Car Forums. It's amazing to me the amount of information contained in these threads. Blue smoke during deceleration or on start up – Bad valve stem seals (valve guides). I can't accelerate through it, but if I let off and drive normal it's fine. This paragraph also applies to relatively stock engines with the original carburetor. 1999 Yukon - Finally fixed misfire under load at 70 mph I've got the Chevy techs baffled as to why it is happening, so I may give this a shot. We tried a known good quadrajet off another car that was running fine and it still did the same. I got the engine timed to the 6 before TDC GM spec. so I started with the simple and cheap tricks. FREE FIX - How to Diagnose and Adjust an A/C Compressor Clutch in Car Truck - Blows Cold Then Warm - Duration: 23:20. As soon as I let off the pedal it smooths out. throttle it bogs, grumbles and sometimes backfires (through the intake I think) but then it takes off like a dragster. It can cause bogging down on hard acceleration and can affect the shifting of the transmission. Edelbrock is the most respected name in performance. Average repair cost is $350 at 98,500 miles. Discussions of technical related subjects pertaining to Chevy V8Z's. It falls on it's face, and sometimes just stalls. Won’t Rev In Gear-February 2007-Question: I’m having a problem with my engine bogging at 5,000 rpm in. 7L 350ci TBI truck and it has been acting up here lately it all started about a month ago. Put gas in ran fine for about 3-4days then just started getting sluggish, loss power, some backfiring when you try to jump on it. Or a plugged exhaust. I have a 1997 Chevy 1500 5. Once engaged in gear (brake fully depressed), the idle hesitates and drops even before the truck is moving (forward or reverse). But funny thing is I timed it without unplugging the black/tan wire two years ago and has ran fine everywhere it's been. I have a 1994 chevy 1500, 350. Blue smoke on acceleration. 0L mercruiser bogging down at speed: 17: Mercruiser 165 IL6 bogging and left me stranded: 29: Mercruiser bogging: 2: 3. Lately it has idled low and kind of rough/noisy. Secondary Air Injection System Malfunction. dont think it went to engines that new but possible. if its the camshaft you will notice little movement on the rocker arm. Discussion in 'The Garage' started by Topdown, Jan 6, 2004. Well, engine is rebuilt in my vette and the rear is now in. New Rochester Carburetor Fits 1974-1977 Chevy Truck 350 454 Eng Manifold Choke. i just got the truck about 4 monthes ago and it had a jasper motor put in it in 2004 so its got 65,000 miles on it. Basically what I notice is unless you really baby it with slow acceleration the engine kind of pauses and sucks in a huge amount of air any time you press the pedal in an assertive way. 99 suburban 454 bogging under acceleration Facebook; 2004 Chevy Silverado I am no mechanic nor have I ever had a 454 but I used to have a 98 Sierra with a 350. My 95 chevy van 5. A common complaint with the Chevy 4. It could be one of 2 things, a lean air bog or a rich bog, I had a Husky dirtbike that had a lean air bog, aggravated the sh*t out of me, try and lean it and see if it crispens up, its easier to raise or low the needly clip setting and you can tell, the closer you raise the needle clip to the top the leaner it will be on topend, the lower you go with the clip raises the needle higher when you. Chevy Venture Van Battery Goes Dead Chevy Venture Van. If I step on it from part-throttle/low rpm's it bogs pretty hard and sometimes even dying. Durring light acceleration and at low speeds (city driving 35 mph or so) the truck seeems to run fine. If the engine will not start when the engine is hot, the choke may be stuck in the closed position, typically due to a lack of lubrication. I put new O. I have a 97 chevy suburban 350 motor. It will not idle right when in drive, but in park it is better. It's OK at steady speed, but not great. Timing checked per correct procedure disconnecting the harness and is at +4 degrees. No codes were set (other than 12). 350 with HEI and quadrajet, Stumble when full throttle. 2001 mustang GT with an '03 motor Been having an issue with my car's acceleration. Driving along at about 40-50mph and I go to accelerate and a get a shuttering/bogging down of the engine and have no real throttle. I've checked the timing and it's set at +2 degrees. The Chevy dealer wanted $350 for the bearing assembly! I got it on line for $154 including shipping. Car has a stock 283 CID V8 engine with a Rochester 4-bbl carb. If you have a car that accelerates well, Holley offers vent whistles and jet extensions that solve the problems that occur during heavy acceleration and braking. it bogs on acceleration dont no the cause - Answered by a verified Chevy Mechanic We use cookies to give you the best possible experience on our website. The following parts have been replaced: spark plugs, wires, fuel filter, distributor, cap, rotor, pick up coil, map sensor, throttle position sensor, and idle air control valve. The J-Body Organization, j-body. Problem CONDITION POSSIBLE CAUSE CORRECTION 5) Ford& Holley Only. Superior Car Talk explains that a sputtering and backfiring problem is usually the result of moisture condensation in the fuel system. and tuned suitable. 7 liter GMC Sputters on acceleration - Chevy Message Forum - Restoration and Repair Help. Engine is a 5. I have a 96 Chevy 1500 5. chevy forum at Car Dealer Forums; Truck runs great, but recently when the engine comes off the enriching circuit. But funny thing is I timed it without unplugging the black/tan wire two years ago and has ran fine everywhere it's been. The same tune setting that might bog like crazy in an Imperial or a T&C Wagon will not bog in a 440 Dart with 4:10 gears and a 3500 stall converter. We stopped in at the pits of David and Tracey Pearson at No Mercy 10 to check up on the progress of their Pro 275 Fox Mustang after converting to Holley EFI! The Vortech boosted Big Block Chevy has pushed this Ford down the 1/8th mile at a record-setting pace of 3. Driving along at about 40-50mph and I go to accelerate and a get a shuttering/bogging down of the engine and have no real throttle. I have a 1990 Chevy Silverado 1500 pick up truck with a 5. Making Your Quadrajet Perform, Like it Should! QuadraFix! Getting GM's most notorious (yet most legendary) four-barrel carburetor to perform. Chevy Truck Magazine This is an insert from an article on Q-jet Tuning Tips that appeared in the January 2000 issue. 060 over with 76cc lt1 heads running about 9:1 compression. The best way to describe problem is that the engine bogs down and sometimes stalls when I increase the throttle from a trolling speed. There is no rough idle it just doesn’t accelerate. Turbo 350 trans and 3. Any suggestions are appreciated. I have a 355 Chevy in a 86 Monte Carlo. The problem I'm having is a single engine stumble durring hard or soft acceleration the first time the truck is moved for the day in first gear. The ECU or the coil gets hot and expands. It occurs after the boat has been running for 45 minutes to an hour. Holy crap this acceleration rattle is killing me now. Poor idling and loud engines usually go hand-in-hand. The only thing different right now we have been having a. The engine bogging down is a good signal to say that the alternator is working, as it tries to ramp up the current. No codes were set (other than 12). A year worth of head scratching. 1983 Chevrolet Scottsdale V8 305 bogs down under acceleration, Carburetor accelerator pump issue. I have changed the plug caps rotor and coil on my own I am now having a problem cranking my truck it will not start but when I do eventually get it started it has trouble running it won't stay running and has a hard time moving like it's getting no gas I don't know what is wrong any help at all would be appreciated. There was a definite issue with fuel delivery. Unlike the New Beetle, an impractical fashion statement of a car, the (Real) Beetle eschewed style for utility. I own a '98 Chevy 1500 with the 5. Basically what I notice is unless you really baby it with slow acceleration the engine kind of pauses and sucks in a huge amount of air any time you press the pedal in an assertive way. Usually the smoke is more noticeable during acceleration. 1988 Chevy Van, 350 motor. Why would a Chevy 350 sputter on acceleration? Why does A CHEVY 350 engine run flawless at idle but bog and sputter id take the rocket my self it has a little more power than the Chevy 350. I run a Q-Jet and it runs great. I have 2004 Chev Venture was having a battery issue with old battery not holding its charge. /yep all other things being equal a stock small block will out breath out wind other types of the same cubic inch engines say a 292 ford compared to a 283 or a 322 buick compared to a 327 or a 351 winsor compared to a 350 chev. This is not a Vortec engine. Acceleration problem 350 chevy? I just switched out the spark plug wires on my Chevy 350 engine now everytime I give it gas it bogs out or I lose acceleration completely and it lurch back and forth it isles fine but once you put it in drive it runs rough it also backfires now. 4L TBI Back Fires at WOT C/K Car Forums. 1 Bogging down and fowling cylinders 8 and 7 on port side only: 0: 5. 1988 Chevy 5. Ignition Systems Cheat Sheet for the Chevy Small Block For our budget-oriented purposes we find that conceptually at least, GM’s HEI distributor is a near ideal choice in terms of practicality. I have a 2005 chevy impala and my problem is that when I am at a red light the car will not go forward even though the car is running. Only does this for a little while when driving after the van has been sitting overnight. It is hard to get that off idle bog. I have taken the TBI unit apart and soaked it in cleaner solution, did the kit with the diaphragm, same thing. AND, it's still idling quite high, maybe 1200rpms; a bit higher when hot. 7L 350 TBI with 109k miles on it. The rear float bowl level is lower than the front to keep fuel from pouring out into the carb throat under heavy braking. Call (217) 862-5352 for more information. Goes 0 to 55ish without trouble, but once I try to accelerate past that, the RPMs don't increase, the transmission doesn't downshift, and the car starts to slow/bog down. I went up and down in jet size until I optimized the mpg. Internally stock 1978 Chevy 350 with an Edelbrock manifold and carb and dual exhaust in my '53 Chevy. If you have access to a scan tool use a hook up for a 1990 350 cu. I accelerate more to a higher speed to get past this but still sputters and pops. In case this doesn't work, anyone else have any suggestions? Thanks in advance for your responses. The best boat forum for marine electrics and marine electronics for technical advice and answers. Constant hesitation is covered under “surging”. Can anyone tell me were to start trouble shooting, It also has a spark in the dark up by the distributer cap 1 Answer. My 1995 Chevy k1500 Silverado 350 V8 stumbles and hesitates when i take off from a stop, it idles fine and runs fine after its moving but off the line it seems like it almost wants to stall. dont think it went to engines that new but possible. Well, engine is rebuilt in my vette and the rear is now in. 80 5 So if it rather is a 350 spinning 6500 rpm it may basically choose a 559 cfm carb The Q jet is rated at 750 cfm yet by way of layout it rather is unlike an o. 1983 Chevrolet Scottsdale V8 305 bogs down under acceleration, Carburetor accelerator pump issue. Can't get it to do it when we take it in to GMC. 7L bogs down when accelerating. acceleration Sputtering and popping was the first indication of trouble with mine (see: Another one not running). The idle is stable and it revs cleanly when the car is out of gear with no load. 1995 Chevy 1500 1/2 Ton Truck (350, 5. We stopped in at the pits of David and Tracey Pearson at No Mercy 10 to check up on the progress of their Pro 275 Fox Mustang after converting to Holley EFI! The Vortech boosted Big Block Chevy has pushed this Ford down the 1/8th mile at a record-setting pace of 3. chevy forum at Car Dealer Forums; Symptoms are as follows: When first started it runs fine for a few seconds then. FREE FIX - How to Diagnose and Adjust an A/C Compressor Clutch in Car Truck - Blows Cold Then Warm - Duration: 23:20. Yet under load, the engine could bog, backfire, and run like poo. It is definitely worse under load. RV with Chevy 454 engine problems to help but still bogs out going up hill,loses power. Decided to purchase new battery, had battery in about 2 days went to start , dead as a door nail. 5V, believed normal. Start at 4:51 if your in a hurry for a solution. MISFIRE and TROUBLESHOOTING the ENGINE - CF-106. Although it certainly could be other things, I'd look into the possibility that it might be time to rebuild the carbs. Lately it has idled low and kind of rough/noisy. 80 5 So if it rather is a 350 spinning 6500 rpm it may basically choose a 559 cfm carb The Q jet is rated at 750 cfm yet by way of layout it rather is unlike an o. Replaced erg, plugs, wires, oxy, filters. I am trying to tune out a hesitation in the off idle part throttle range. Motor had no issues until I started it after sitting in the garage for 1-year, runs rough & "backfires" through 1 side of the header exhaust (passenger). The J-Body Organization, j-body.