Chevy 350 Bogs On Acceleration

Chevy 350 Bogs On Acceleration

Chevy 350 Bogs On Acceleration

However in terms of high-RPM function, it falls well short of ideal. Any suggestions are appreciated. The numbers on the front are 80453 and below that it is 3345. 7 liter GMC Sputters on acceleration - Chevy Message Forum - Restoration and Repair Help. What could be the problem? Timing?. I have a 2005 GMC Sierra with the 5. (Searched for parts for 1999 Chevy. The J-Body Organization, j-body. 1988 c1500 with 350 bogging down on acceleration. 1998 Dolphin 36ft Chevy 454. 7 ive replaced everything also at 1500 rpms it sounds like it has a bad [non-permissible content removed] cam in it anything lower or higher than that runs fine except it wants to. My truck bogs down (and tries to die) when I give it gas to accelerate off of a stop. All that I could find was that it was a 600 cfm carb. Recently i have been experiencing a drop at idle from time to time. Well my problems is cured. I have a 2006 Jetta that seems to have "flat" spots during acceleration. Cure The Bog And Sluggish Response On Your Holley Four-Barrel Carburetor, By Properly Adjusting The Accelerator Pump Assembly. 3 liter v6, the problem is, it starts good idles great, goes good a low speed but when i go to get on it it bogs out, if i hold it to the floor it sputters and starts to come out of it but it dosent, ive changed the tcs and the thing that controls my vaccum system. Engine cuts out/bogs down at higher RPM's he removed the line feeding the carb on his 350 Merc to see if there was a filter or something where the line attaches. 7 vortec sluggish, loss power. I went up and down in jet size until I optimized the mpg. It will accelerate fine if I apply the pedal like normal such as at a green light. Bog/stumble on acceleration Hi folks, When the truck is stopped and in gear, and I put my foot lightly on the gas, I'll get a stumble or bog - like the timing suddenly retards - and then I'll take off quick, as soon as the engine is out of that little area around 1000-1200 RPM. 041 64cc 202/160 heads. 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. Thanks > > fuel filter would be my next choice. It occurs after the boat has been running for 45 minutes to an hour. I got a 94 Chevy 350 motor it starts fine and runs fine but when I excelerate and give it a lot of gas it bogs down. 7 Idle surging,stalling in the alt. But any time I just mash the pedal, at any speed or in neutral, it stumbles for half a sec and then takes off. I've fiddled and fiddled with the accelerator pump (installed new parts adjusted and adjusted) and it still does it. But funny thing is I timed it without unplugging the black/tan wire two years ago and has ran fine everywhere it's been. /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. Sign in to follow this. > Truck is a 1989 ¾ ton with 350 engine. Feels like it's bogging down wanting to stall. com has ranked N/A in N/A and 1,472,333 on the world. Engine light would turn off after three days when normal driving. Odd hesitation on acceleration. Tuning a carburetor to supply an engine with the correct jetting-air/fuel mixture has always been a job that almost impossible for most hot rod owners and tuners. Never had any problems like this before with this truck. Sbc lean bog on acceleration Discussion in ' What I have is a rebuilt small block Chevy 350 bored. Now say I come to a hill, and my car can hold its speed and rpms, but I have to floor it or nearly floor it to keep my speed. General Tech - 1994 350 tbi bogging when accelerating - i have a 1994 gmc sierra 1500 with a 350 v8 tbi. Removing a vacuum line off of the intake manifold helps idel. at idle the voltage goes from 12 to 14 just bouncing around , i tryed the the MAF sensor cleaning and it helped somewhat i have already. I run a Q-Jet and it runs great. $3200 later from the shop it still was blowing blue smoke. Thanks for a great job. If you have access to a scan tool use a hook up for a 1990 350 cu. Has a quadrajet carb, new fuel pump and filter, new points, condensor, new coil. Or a plugged exhaust. Chevy Truck Forum | GM Truck Club. not the fuel pump or the filter, and definately not spark. $3200 later from the shop it still was blowing blue smoke. Here's the scoop. If I floor it in idle it falls on its face around 3800 to 4000 rpm it falls and spudders. Hello, I am hiving a issue that I have been trying to fix for some time now, from a stop in hard acceleration my car bogs very bad. It will accelerate fine if I apply the pedal like normal such as at a green light. I'd be cruising on the highway and step on it and it would cough and sputter and then clear up. /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. Chevy 350 tbi bogging. have done at least 20 cams on. In the past, most performance. How much does Engine hesitates during acceleration Inspection cost? Get an estimate instantly. SBC crate, ART arms, 57 chevy side mirrors, Shotgun Bills Scoop, GC valves,FBSS, 8g tank. Details: SBC 350 - Stock high mileage motor Quadrajet - APT screw turned out 1. It's OK at steady speed, but not great. The easiest method for adjustment, since you already have a bog, is to tighten the spring in 1/16 turn increments until the bog is gone. 0 Mercruiser Alpha 1 2001 stingray "Bogging Issue" 6: 3. It can cause bogging down on hard acceleration and can affect the shifting of the transmission. The engine is a 1969 350 chevy. Examples of this are staling, lurching and poor acceleration. I sent an email to Edelbrock a couple years ago when I switched to bone stock 305 with all of the motor specs, they gave a me a great list of mods. I have messed with timing and checked for vacuum leaks and cant find anything so I decided to turn to the most trusted people on the internet you guys. The worst complaints are accessories - exterior, accessories - interior, and brakes problems. Unplug the tan/black wire, time the engine to ZERO degrees and reconnect the tan/black wire. Poor idling and loud engines usually go hand-in-hand. Recently i have been experiencing a drop at idle from time to time. If your car or truck is equipped with a Holley four barrel carburetor and stumbles upon acceleration, more than likely the carburetor needs an adjustment to the accelerator pump assembly. My 95 chevy van 5. When I do this it's a light backfire through the carb and then she'll rev up nice and quick. New issue that's just come up in my truck. My car runs good when it's cold but stalls once it warms up? What gives? Well, there is an ignition problem that can cause this when the engine gets hot and it stalls. If you have installed a Fuel Injection system in your vehicle and are having some initial issues here is a quick checklist to work from to get you started. Replace the pull off. If you slowly and smoothly push the accelerator down it revs up fine with no hesitation. Turbo 350 trans and 3. A carb that would be too big for them and have a bog if opened too quickly will work great on a chev mill. Hesitation during acceleration at high R. General Tech - chevy 350 bogs on acceleration - I have an 85 Chevy c-10 with a sb 350, hei distributor with no vacuum advance, with a Holley 600cfm Carb, I've tried adjusting idle air screws, had a friend help me out, haven't tried timing yet, haven't really done alot of that, it bogs on light acceleration, especially. (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. 84 k5 with 350 and 650 edelbrock with electric choke, she starts and idles fine the problem happens when i put a heavy load on it say going up a hill or passing someone it feels like she is bogging down and does not want to go anywhere and starts to sputter if i give her more gas. It recently developed a hesitation/bog/backfire upon acceleration. Further information from the customer indicated that the truck misfired the worse in drive, not overdrive, at light to normal cruise around 2000 rpm to 2500 rpm. 7 leter vortec. On hard acceleration it is bogging down like there is to much air, because sometimes it backfires. If you have access to a scan tool use a hook up for a 1990 350 cu. Van is in great shape but is our work vehicle. 1 Bogging down and fowling cylinders 8 and 7 on port side only: 0: 5. I went up and down in jet size until I optimized the mpg. Hopefully this will offer some insight into what can cause some motors to need a rebuild at 35K miles and other identical engines go 100K miles with few problems. Reply 1: scan for codes and check. Chevy Truck Magazine This is an insert from an article on Q-jet Tuning Tips that appeared in the January 2000 issue. 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. 7L Throttle/Bog Issue Had to be steady on acceleration so you could get the right fuel to air ratio). acceleration bogging down 5 answers. Another thing I did for the first time with this truck at the same time, I added some of the Power Services Diesel Kleen. During acceleration, the engine momentarily drops out of closed loop and receives a richer fuel mixture for more power. dont think it went to engines that new but possible. The sensor that I bought is a Standard brand, number SG-12. GM Turbo 350 Transmission Rebuild Troubleshooting Guide Troubleshooting is the step-by step process where you can logically diagnose a problem. 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. Please post if you fined the fix as I will if I do. Discussion in 'Chevy C/K Truck Forum' started by JEnJEn, Nov 24, 2014. But few marine engines live long enough to wear out a timing chain. Bog, Hesitation, Backfiring on acceleration from standstill. All that I could find was that it was a 600 cfm carb. 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. Won’t Rev In Gear-February 2007-Question: I’m having a problem with my engine bogging at 5,000 rpm in. Over 40 mph the carb seems to bog down a LOT especially under WOT. Sign up here! Email This Post: Auto Repair Home>> Truck but shouldn't cause it to die or bog on acceleration. Unplug the tan/black wire, time the engine to ZERO degrees and reconnect the tan/black wire. 7l, only 3-4 hours. But any time I just mash the pedal, at any speed or in neutral, it stumbles for half a sec and then takes off. When sitting parked, if you press the throttle, it runs choppy. Menu and widgets. com reaches roughly 2,121 users per day and delivers about 63,622 users each month. If there is a high drain electrical fault (i. This vehicle came into the shop with a customer concern of no power on acceleration. The initial problem was the truck stalled and died. I did a TON of research and a lot of impala owners have this. I have a 1988 Chevy K1500 5. 7L bogs down when accelerating. All that I could find was that it was a 600 cfm carb. but when you give hard acceleration, it falls on its face. chevy forum at Car Dealer Forums; Symptoms are as follows: When first started it runs fine for a few seconds then. This paragraph applies to an instantaneous bog, hesitation, or stumble upon acceleration. not the fuel pump or the filter, and definately not spark. 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. Here's the scoop. He says that is the first. No codes were set (other than 12). Cure The Bog And Sluggish Response On Your Holley Four-Barrel Carburetor By Properly Adjusting The Accelerator Pump Assembly. it only happens when the engine is at half on the temp gauge. Smells rich but with voltmeter on board connected to the oxygen sensor shows around 0. When I accelerate my Chevy bogs down, it starts to sputter and pop, ie blow back through the TBI throat. On anything other than a slight acceleration, I get a tremendous bog (sometimes resulting in a backfire, and if from a dead stop, killing the motor!). Joined: Nov 26, 2002. Start at 4:51 if your in a hurry for a solution. We tried a known good quadrajet off another car that was running fine and it still did the same. The Chevy dealer wanted $350 for the bearing assembly! I got it on line for $154 including shipping. I basically have to crawl thr. 7 bogs/backfires when I give it gas. then once it does, it idles fine. Please post if you fined the fix as I will if I do. 7 vortec sluggish, loss power. com: chevy inline 6. It is hard to get that off idle bog. Temperature only seems 95 Chevy 350 TBI. It is hard to get that off idle bog. Skip to main content. There is no rough idle it just doesn’t accelerate. Replaced erg, plugs, wires, oxy, filters. Making Your Quadrajet Perform, Like it Should! QuadraFix! Getting GM's most notorious (yet most legendary) four-barrel carburetor to perform. 350 ci x 6,000 rpm = 2,100,000 is the best choice because the design of the. The engine has around 70,000 miles on it. Mercruiser 8. Here's the scoop. AND, it's still idling quite high, maybe 1200rpms; a bit higher when hot. 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. 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. 90! Read More. The J-Body Organization, j-body. 2002 Chevy Blazer LS lacks power and bogs down with no pick-up at acceleration. If I really lay down on the throttle it will die or at least come close to it. $3200 later from the shop it still was blowing blue smoke. I have a 1993 Chevrolet C1500 pickup with a 5. When sitting parked, if you press the throttle, it runs choppy. My car runs good when it's cold but stalls once it warms up? What gives? Well, there is an ignition problem that can cause this when the engine gets hot and it stalls. It will not idle right when in drive, but in park it is better. Very poor mileage too. i should have bought this wideband years ago. I have a 2006 Jetta that seems to have "flat" spots during acceleration. Never had any problems like this before with this truck. For some scan tools enter VIN 10th “L” 3rd “C” 8th “K”. 84 k5 with 350 and 650 edelbrock with electric choke, she starts and idles fine the problem happens when i put a heavy load on it say going up a hill or passing someone it feels like she is bogging down and does not want to go anywhere and starts to sputter if i give her more gas. Question about my holley carb. The Qjet whether it rather is in good working cond. Chevy Impala SS Forum > 91-96 Impala/B-body > Engine Problems/Maintenance > Engine bogs down under heavy acceleration Reply. 1993 Chevy K1500 5. Then the mains start up about 2500 RPM and the bog goes away, but will come back again ( but less ) as RPM gets into the 5,000 range because that missing power-valve fuel is still missing, so the engine goes lean again. Made it have shitty acceleration, and spit back through the carb. I Troubleshoot and fix this is. Another cause of blue smoke is bad valve stem seals. OK, I bought someone Else’s problem. If I push the pedal down too fast, the engine bogs down. 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. I changed > plugs, rotor, and cap. Provided by Alexa ranking, carburetor-blog. " Automobiles are decisive instruments by nature, traversing the Earth in, as much as possible, a straight line from Point A to Point B. Suddenly on my way home from town last weeki went on the gas pretty hard, and once the needle hit about 3000 RPM, it sounds like a popcorn machine in my exhaust, and the rpms jump all over the place. A common complaint with the Chevy 4. Chevy 350 tbi bogging. Share this post. it only happens when the engine is at half on the temp gauge. 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. If I push the pedal down too fast, the engine bogs down. It is hard to get that off idle bog. Roadstar MOTOOS 18493 3HP High Torque Mini Starter Fit for Chevy Chevrolet SBC 350 BBC 454 Dual Inline 9 Tooth Red. In early fall the truck started making what I can only describe as a mild and inconsistent "stutter" upon accelerating between 40-50 MPH. It can cause bogging down on hard acceleration and can affect the shifting of the transmission. If there is a high drain electrical fault (i. An engine with bad rings will also show signs of power loss, especially when going up hills. 42 rear end. We’d tested plug and wire, so it’s on to the coil. General Tech - chevy 350 bogs on acceleration - I have an 85 Chevy c-10 with a sb 350, hei distributor with no vacuum advance, with a Holley 600cfm Carb, I've tried adjusting idle air screws, had a friend help me out, haven't tried timing yet, haven't really done alot of that, it bogs on light acceleration, especially. We usually refer to an exhaust backfire as a "backfire", and backfiring through the carb as "spitting" or "coughing". Further information from the customer indicated that the truck misfired the worse in drive, not overdrive, at light to normal cruise around 2000 rpm to 2500 rpm. 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. If this is the one with the Chevy 350 motor with electronic ignition, you may need a new water pump. 2000 Silverado 5. 84 k5 with 350 and 650 edelbrock with electric choke, she starts and idles fine the problem happens when i put a heavy load on it say going up a hill or passing someone it feels like she is bogging down and does not want to go anywhere and starts to sputter if i give her more gas. 350 motor 4L60E trans Motor wants to stall while in gear (but doesn't do it out of gear once over 1000 rpm it dosent) seem to stall and it is only from a dead stop. Timing checked per correct procedure disconnecting the harness and is at +4 degrees. Well, engine is rebuilt in my vette and the rear is now in. 1993 Chevy K1500 5. i had a similar problem with my 93 with the 350 if i parked it and reved it up it would blow black **** all over my garage lol and going down the road it would bog out really bad it was really dumping gas in the tb! so i changed the tb and it ran a lil better than i found out the motor was a 98 vortech and the older intakes would not work on there so i sold the truck (did not feel. I'm thinking it's a valve out of adjustment. Start at 4:51 if your in a hurry for a solution. Whatever your perception, there is no denying that to Chevrolet enthusiasts, the Q-jet is the least understood carburetor placed on muscle cars and trucks. New to the site. 2001 mustang GT with an '03 motor Been having an issue with my car's acceleration. 7 EFI - TBI engine, just shy of 1300 hours on it. If I really lay down on the throttle it will die or at least come close to it. I would also look at the secondary air valve. If you have installed a Fuel Injection system in your vehicle and are having some initial issues here is a quick checklist to work from to get you started. My truck bogs down (and tries to die) when I give it gas to accelerate off of a stop. I have a 1990 Chevy Silverado 1500 pick up truck with a 5. 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. Why is the engine bogging under acceleration? I recently managed to get the moped running properly, albeit for only a short time. but bogs and dies on. Internally stock 1978 Chevy 350 with an Edelbrock manifold and carb and dual exhaust in my '53 Chevy. Turbo 350 trans and 3. Secondary Air Injection System Malfunction. I'm thinking it's a valve out of adjustment. 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. But any time I just mash the pedal, at any speed or in neutral, it stumbles for half a sec and then takes off. If you only use half throttle it doesnt seem to bog as MUCH. com: chevy inline 6. A year worth of head scratching. FREE FIX - How to Diagnose and Adjust an A/C Compressor Clutch in Car Truck - Blows Cold Then Warm - Duration: 23:20. leads, coil, etc), the engine will bog down more than usual, and the interior lights will dim, as well as the headlights, as the alternator tries to source more current. Well, engine is rebuilt in my vette and the rear is now in. 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. I have a 1997 chevy 1500 siverado with a 5. I have a 2006 Jetta that seems to have "flat" spots during acceleration. Only does this for a little while when driving after the van has been sitting overnight. I have a Chevy K1500 sierra with a 350 that is not EFI. An engine with bad rings will also show signs of power loss, especially when going up hills. 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. If I floor it the engine just falls flat on its face while in drive. Erratic idle, bogging down, etcseems to be the common theme among those who replaced the sensor with successful results. I have a 2005 GMC Sierra with the 5. Asked in Chevy Blazer, Chevy 350 I experienced poor acceleration in my '95 Chevy blazer, which eventually. If your car or truck is equipped with a Holley four barrel carburetor and stumbles upon acceleration, more than likely the carburetor needs an adjustment to the accelerator pump assembly. Bog, Hesitation, Stumble. It just started making what sound like an engine roar under hard acceleration over and above the engine noise. when I accelerate quickly or matt it the truck will back fire through the tbi and will either stall completely. If I floor it in idle it falls on its face around 3800 to 4000 rpm it falls and spudders. GM Turbo 350 Transmission Rebuild Troubleshooting Guide Troubleshooting is the step-by step process where you can logically diagnose a problem. If your car or truck is equipped with a Holley four barrel carburetor and stumbles upon acceleration, more than likely the carburetor needs an adjustment to the accelerator pump assembly. 2000 Silverado 5. chevy forum at Car Dealer Forums; Symptoms are as follows: When first started it runs fine for a few seconds then. If I'm in park and mash the pedal the engine will hesitate a little but will rev up. My 95 chevy van 5. Truck starts fine. so I started with the simple and cheap tricks. If you have installed a Fuel Injection system in your vehicle and are having some initial issues here is a quick checklist to work from to get you started. but bogs and dies on. Feels like it's bogging down wanting to stall. The idle is stable and it revs cleanly when the car is out of gear with no load. Heat causes expansion. Asked in Chevy Blazer, Chevy 350 I experienced poor acceleration in my '95 Chevy blazer, which eventually. 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. 7L 350ci TBI truck and it has been acting up here lately it all started about a month ago. /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. However we cannot wait 20 minutes everytime it won't start between jobs. 1971 Chevy Pickup I had problems with my old Qjet carb, when you floor it, it bogs down so i replaced it with a new qjet. 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. Jump to content. Holley, edelbrock, etc you will choose a six hundred cfm, no longer something any bigger on those highway carb cfm = rpm x displacement / 3456 x 0. 1993 Chevy K1500 5. In case this doesn't work, anyone else have any suggestions? Thanks in advance for your responses. I'd be cruising on the highway and step on it and it would cough and sputter and then clear up. This goes for all vortec 4. I put a 1405 on my mild 350 chevy in my FJ40 years ago and added the electric choke after. Unlike the New Beetle, an impractical fashion statement of a car, the (Real) Beetle eschewed style for utility. Towed twice, Both times were fuel pump problems. New to the site. As soon as I hit the gas engine bogs down. Reply 1: scan for codes and check. All plugs, wires, cap and rotor replaced, new egr, map, temp sensor (another subject) all replaced…. I've always been told TBI motors are picky with timing that if it's not perfect it won't run right. While the fuel tank may be tightly capped, water can still seep in over time as the result of temperature extremes. Edelbrock is the most respected name in performance. Pumping the gas does not help. Poor idling and loud engines usually go hand-in-hand. ? be closing on acceleration. The ads of my youth played that up relentlessly, amusingly, logically. For some scan tools enter VIN 10th "L" 3rd "C" 8th "K". All that I could find was that it was a 600 cfm carb. The engine has around 70,000 miles on it. Change should be less than 10%. Edelbrock Sputtering and Bog at WOT Acceleration! 350 c. My 95 chevy van 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. 75 Answers. the standard Chevy cam (the cam. 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. 0 Mercruiser Alpha 1 2001 stingray "Bogging Issue" 6: 3. At slow accel, bogs out and barely moves. I put new O. Now say I come to a hill, and my car can hold its speed and rpms, but I have to floor it or nearly floor it to keep my speed. My Vehicle was hesitating while I accelerated on the gas, almost stalling, back firing, like it wasn't getting enough gas. How much does Engine hesitates during acceleration Inspection cost? Get an estimate instantly. Symptoms of a. When I ease on that gas really lightly it's fine and if i whomp on it, it's generally ok to. my 1994 Chevy 1500 350's rpm gauge keeps serging up and down It also sputters during acceleration and at 55 60 mph it bogs down or surges in power and speed. 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. Over 40 mph the carb seems to bog down a LOT especially under WOT. When I accelerate my Chevy bogs down, it starts to sputter and pop, ie blow back through the TBI throat. 5 inch Ram's Horn Exahust on a 350. 350 TBI acceleration problem Engine & Drivetrain. I have a 1988 Chevy K1500 5. The customer described the symptoms as bogging when pressing the accelerator. at stop lights if the air is off the car will pick up and go discently. Blue smoke on acceleration. 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 engine has around 70,000 miles on it. Runs good if I > accelerate slowly. The numbers on the front are 80453 and below that it is 3345. What could be the issue?. 1983 Chevy bogs down Quadrajet accelerator pump Dav. 3 engine is that it doesn't idle well, it's loud and makes awkward noises. on a very cold start, it starts fine, idles fine, when accelerated it will bogg down & spit & spudders to the point of all but dieingafter running for a few minutes it will take off and run witho. jimh: posted 12-07-2007 08:18 PM ET (US). When I accelerate my Chevy bogs down, it starts to sputter and pop, ie blow back through the TBI throat. If you have access to a scan tool use a hook up for a 1990 350 cu. If put to the floor, will accel. 7 liter GMC Sputters on acceleration - Chevy Message Forum - Restoration and Repair Help. Hey so I need some help on diagnosing this thing. Using a multimeter, you can test the ohm ratings of both primary and secondary outlets on the waste-spark coil, and all of those on this truck tested well (between 0. I have a 1991 5. 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. 060 over with 76cc lt1 heads running about 9:1 compression.