Chevy 350 Bogs On Acceleration

If the O2 sensor is bad, it should show that code, too- whether it can lean the mixture enough to cause knock is almost academic, but on hard acceleration, it could be base timing, IAC, Knock Sensor, or possibly the ECT sensor, although I didn't see anything about hard starting when hot. If I push the pedal down too fast, the engine bogs down. Timing checked per correct procedure disconnecting the harness and is at +4 degrees. 95 Chevy 350 TBI acceleration problems throttle it bogs, grumbles and sometimes backfires (through the intake I think) but then it takes off like a dragster. Very poor mileage too. But any time I just mash the pedal, at any speed or in neutral, it stumbles for half a sec and then takes off. Ok so i have my car tuned up pretty well, ignition timing at about 12 degrees, brand new plugs and wires. My vortec 350 starts right up idles fine and accelerates only as long as I stay under 2000 to 2200 rpms. Possible fuel problem, maybe pump/pressure, or dirty injectors, but sounds more like electrical/ignition to me. After I changed the oil it too started blowing blue smoke out from a dead stop when cold, and accelerate up to 2000 rpm without a hitch. TBI definition. General Tech - 1994 350 tbi bogging when accelerating - i have a 1994 gmc sierra 1500 with a 350 v8 tbi. Rough idle, bad hesitation on acceleration, perfect idle with TPS disconnected (1994 Toyota Previa) Very rough idle with a repetitive cycle that is smooth for a couple of seconds then misses badly, occasionally stalling. Sign up here! Email This Post: Auto Repair Home>> Truck but shouldn't cause it to die or bog on acceleration. DO YOU REMEMBER THE OLD ROCHESTER QUADRAJET? BE THE FIRST TO OWN THE NEW UPDATED VERSION OF THE OLD ROCHESTER QUADRAJET IN OVER 20 YEARS!!!! All the other EBay sellers claim to have new units, but they are just rebuilt units and claiming there new. It just takes a little effort. ? be closing on acceleration. I know i have a bad passenger side CV axle gasket (on the differential). I have a 93 Chevy C1500 4. Chevy 350 tbi bogging. when im going down the interstate and get around 55 to 70 it starts to bog down. What does this sound l. What could be the issue?. Narrowing down the cause of engine bog and dead spots in the rpm range - Hot Rod Magazine. It will not idle right when in drive, but in park it is better. It was running great when I brought itIt was running great when I brought it. The reason you are bogging is a lack of fuel which causes misfire. Unless I accelerate very slowly, it coughs and stumbles and wants to die. Hi, I recently got a car with a Holley carburetor on it, and first of all I can't find it listed anywhere. at stop lights if the air is off the car will pick up and go discently. Blue smoke on acceleration. New to the forum with (maybe) an old problem. SBC crate, ART arms, 57 chevy side mirrors, Shotgun Bills Scoop, GC valves,FBSS, 8g tank. V8 Z Forums Bog on hard acceleration Wanting to do a 350 swap in my 79. 1999 Chevy Silverado - Sluggish Acceleration? I'm wondering if there's a problem somewhere like bad intake sensors or something. The truck starts and idles without an issue. the only things i can think of left in the fuel system that 350 runs great at idle but bogs down during acceleration. higher the rpm and the more throttle into it the harsher the misfire. Unplug mass air flow sensor restart truck and drive to see if helped. mud bog or need high rpm acceleration, just. My 98 pickup(350) has started bogging when accelerating at any speed. 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. Carburetor rebuild, throwing parts at, and uncertainty as to this truck being sent to the crusher. Reply 1: scan for codes and check. 7) Carter Only. Home Forums > Chevy Truck Tech Forums > Chevy C/K Truck Forum > Bogging down on hard acceleration. Throttle stumble (cough, backfire through carb) at acceleration. The engine has around 70,000 miles on it. 3 v8 gas has a very rough idle, and stalls at low manuver speeds like turning at low speed or backing up. 7L Throttle/Bog Issue Had to be steady on acceleration so you could get the right fuel to air ratio). New Rochester Carburetor Fits 1974 Chevy Car 350 400 Engines Manifold Choke. 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. 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. Discussion in 'The Garage' started by Topdown, Jan 6, 2004. 1995 Chevy 1500 1/2 Ton Truck (350, 5. 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. 7L 350ci TBI truck and it has been acting up here lately it all started about a month ago. 7 vortec sluggish, loss power. it only happens when the engine is at half on the temp gauge. Spark comes from the ignition system. My '57 Chevy Bel Air Sport Coupe has a bad hesitation problem upon acceleration from a stand still or very slow speed. feels like rear end 18 Answers. I have a 100 gph Holley fuel pump. 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. 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!). I don't have engine bog at driving speeds, just aggressive acceleration just off idle. I went up and down in jet size until I optimized the mpg. The rear float bowl level is lower than the front to keep fuel from pouring out into the carb throat under heavy braking. If put to the floor, will accel. Other than that, it bogs off of idle. GM Turbo 350 Transmission Rebuild Troubleshooting Guide Troubleshooting is the step-by step process where you can logically diagnose a problem. Blue smoke during deceleration or on start up – Bad valve stem seals (valve guides). 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. On the sea trial it bogged at WOT on hole shot. Alright I am trying to bounce an idea and a problem here at the same time. org, is the worlds largest automotive enthusiast group exclusively geared towards the General Motors GM J-car platform including the Chevrolet Cavalier, Pontiac Sunfire, Pontiac Sunbird, Pontiac J 2000, Oldsmobile Firenza, Buick SkyHawk and Cadillac Cimarron. The 2017 Lexus RX 350 has 54 problems & defects reported by RX 350 owners. but bogs and dies on. chevy forum at Car Dealer Forums; Truck runs great, but recently when the engine comes off the enriching circuit. > Truck is a 1989 ¾ ton with 350 engine. (very new to carburators) I seem to have a smooth idle and the truck acccelerates okay if done slowly. Last weekend I was under the truck with a rubber malet banging around trying to reproduce the noise. 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. A 305 TBI, after half throttle I get no acceleration, growls at full throttle and actually decelerates. 7L) userpete1037. Edelbrock Sputtering and Bog at WOT Acceleration! 350 c. 7) Carter Only. I have taken the TBI unit apart and soaked it in cleaner solution, did the kit with the diaphragm, same thing. My Vehicle was hesitating while I accelerated on the gas, almost stalling, back firing, like it wasn't getting enough gas. 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. It covers up the hole before the main jets flow at 100%. It's a Timken assembly. I have a '97 k1500 with a 350 and 4l60e automatic. Backfiring during acceleration occurs when ignition takes place in the intake or exhaust instead of the combustion chamber. In other words when accelerating normally the engine will randomly bog down as if it's mis-firing. 1994 Chevy C1500 5. Although it certainly could be other things, I'd look into the possibility that it might be time to rebuild the carbs. I would also look at the secondary air valve. I can get it to backfire through the carb in neutral by flooring it really quick. Carburetor rebuild, throwing parts at, and uncertainty as to this truck being sent to the crusher. I cannot hear any noises and can distinguish the vibrations from when my MDS kicks in. If there is a high drain electrical fault (i. 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. All plugs, wires, cap and rotor replaced, new egr, map, temp sensor (another subject) all replaced…. 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. 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. so I started with the simple and cheap tricks. This paragraph applies to an instantaneous bog, hesitation, or stumble upon acceleration. I need help with my 89 c1500 extended can 2wd. The fuel pump was replaced six weeks ago along with a new fuel filter. 7 liter GMC Sputters on acceleration - Chevy Message Forum - Restoration and Repair Help. Here's the scoop. 350 with HEI and quadrajet, Stumble when full throttle. This is not a Vortec engine. Also after sudden acceleration it backfires more often than not. I changed > plugs, rotor, and cap. 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. messages on the Chevy Impala SS Forum. Engine starts and idles like a dream. 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. 7 bogs/backfires when I give it gas. 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. I put a 1405 on my mild 350 chevy in my FJ40 years ago and added the electric choke after. I Troubleshoot and fix this is. Call (217) 862-5352 for more information. I’ve checked the timing and it’s set at +2 degrees. 1988 Chevy Van, 350 motor. As soon as I let off the pedal it smooths out. It is definitely worse under load. Well my problems is cured. The ads of my youth played that up relentlessly, amusingly, logically. The fuel system pressure must be tested to see if the fuel delivery system is the problem. 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. 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. I would go to accelerate while going down the road and it would hesitate and bog down. I have a Chevy K1500 sierra with a 350 that is not EFI. System is going lean, and after 20-30 seconds of running lean, then goes into open loop forever. There is often a backfire or two when this happens. 4: Backfires in Exhaust Note: It is normal for many high performance exhaust systems to moderately backfire or pop when the throttle is closed from mid-to-high rpm. The engine has around 70,000 miles on it. 75 Answers. Constant hesitation is covered under “surging”. New issue that's just come up in my truck. 7) Carter Only. 7 Idle surging,stalling in the alt. mud bog or need high rpm acceleration, just. then once it does, it idles fine. It idles fine but on acceleration it bogs down pretty bad does it sound more like a fuel problem or distributor. throttle it bogs, grumbles and sometimes backfires (through the intake I think) but then it takes off like a dragster. A common complaint with the Chevy 4. 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. 3 Hesitation on acceleration Silverado Car Forums I just bought my first chevy (silverado 2001 5. This paragraph also applies to relatively stock engines with the original carburetor. Carburetor rebuild, throwing parts at, and uncertainty as to this truck being sent to the crusher. New issue that's just come up in my truck. I have a 1990 Chevy Silverado 1500 pick up truck with a 5. The truck runs great with the exception of bogging down when I step on the gas. Unless I accelerate very slowly, it coughs and stumbles and wants to die. My truck (in sig) just developed a bad stumble on acceleration. If you still have a bog then it is for sure in the primaries and not the secondaries opening up. During this time (depending on the system), the Airflow Sensor and the TPS sensor play critical roles in controlling the fuel mixture. Yet under load, the engine could bog, backfire, and run like poo. All that I could find was that it was a 600 cfm carb. No codes were set (other than 12). Superior Car Talk explains that a sputtering and backfiring problem is usually the result of moisture condensation in the fuel system. I bought one at Pep Boys for $36 (told them it was a 1999 350 Chevy 5. If I really lay down on the throttle it will die or at least come close to it. [SOLVED] chevy 1500 backfire. 7 liter vortecs. Examples of this are staling, lurching and poor acceleration. Problem CONDITION POSSIBLE CAUSE CORRECTION 5) Ford& Holley Only. On the sea trial it bogged at WOT on hole shot. okay so in my 87 chevy suburban with a 5. Well, I loosened the bolt, rotated the base, glued the crack in the new cap, installed it, and re-adjusted the timing. I have a 1993 Chevrolet C1500 pickup with a 5. Internally stock 1978 Chevy 350 with an Edelbrock manifold and carb and dual exhaust in my '53 Chevy. 2004 Indmar Assault 5. The problem worsens at 2000-2500 rpms and 50 mph. Runs good if I > accelerate slowly. Alright I'm going to do the best I can to try and describe what is going on. 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. 3 2wd) at his advice. 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. 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. Discussion in 'Chevy C/K Truck Forum' started by JEnJEn, Nov 24, 2014. I put a 1405 on my mild 350 chevy in my FJ40 years ago and added the electric choke after. I have 1992 1500 chevy truck 4x4, Its always been a good running truck, has the 4. Asked in Chevy Blazer, Chevy 350 I experienced poor acceleration in my '95 Chevy blazer, which eventually. 0 Mercruiser Alpha 1 2001 stingray "Bogging Issue" 6: 3. org, is the worlds largest automotive enthusiast group exclusively geared towards the General Motors GM J-car platform including the Chevrolet Cavalier, Pontiac Sunfire, Pontiac Sunbird, Pontiac J 2000, Oldsmobile Firenza, Buick SkyHawk and Cadillac Cimarron. The sensor is new but the connection is suspect. Mercruiser 8. 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. Chevy 350 tbi bogging. I run a Q-Jet and it runs great. (very new to carburators) I seem to have a smooth idle and the truck acccelerates okay if done slowly. Re: 350 TBI acceleration problem It'll be the higher speed setup Only ECM I am aware of that runs at 160 baud is the 85 Corvette / Camaro / Firebird / GTA TPI ECM Make sure that you confirm that the pinout on your ALDL port is the same as their wiring diagram by physically looking at the wires. 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. And as has to pay any taxes on it or not i'm annoyed by traffic police Brakes will melt america down to what’s in your favor on this (5 children) it can possibly reach the gulf of mexico, albeit the land and the simplest cure to reality Trucks, chevy sweet, pickup trucks, classic cars, motorcycles, atv’s & jet skies. New to the site. 1983 Chevy bogs down Quadrajet accelerator pump Dav. I have a 1993 Chevrolet C1500 pickup with a 5. 3 2wd) at his advice. The total for them to diagnose it costing $90 and the parts + labour all came to a total of $582 from AAA (Automark Car Center) they charged me a total of $350 just for the EGr 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. Although generic, the specific repair steps may vary depending on make/model. The boat was bought after the 4cylinder omc 3. That's a long story from when my project began. Feels like it's bogging down wanting to stall. My truck bogs down (and tries to die) when I give it gas to accelerate off of a stop. 350 with HEI and quadrajet, Stumble when full throttle. Hey so I need some help on diagnosing this thing. Problem is engine starts and idles fine but as soon as you give it gas it dies everytime. There was a definite issue with fuel delivery. New issue that's just come up in my truck. 82 Malibu wagon nothing special 350 Chevy. Sign up here! Email This Post: Auto Repair Home>> Truck but shouldn't cause it to die or bog on acceleration. 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). 7L engine and the fuel filter has been replaced I cleaned the injectors out and put a new gasket on. I accelerate more to a higher speed to get past this but still sputters and pops. 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. Carburetor rebuild, throwing parts at, and uncertainty as to this truck being sent to the crusher. 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. Discuss 1990 TBI 5. Bog, Hesitation, Stumble. I got the engine timed to the 6 before TDC GM spec. Chevy Impala SS Forum > 91-96 Impala/B-body > Engine Problems/Maintenance > Engine bogs down under heavy acceleration Reply. 1995 Chevy 1500 1/2 Ton Truck (350, 5. 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. I have 2004 chevy Blazer with the 4. I am trying to tune out a hesitation in the off idle part throttle range. I would go to accelerate while going down the road and it would hesitate and bog down. 7 tbi runs rough cold and Discussion in 'Chevy Trucks' started by russ130, Dec 16, 2008. 8 (K) engine with TBI. 060 over with 76cc lt1 heads running about 9:1 compression. If we follow you instructions above it starts every time. Engine hard to start. Sounds like a machine gun. 7 liter GMC Sputters on acceleration - Chevy Message Forum - Restoration and Repair Help. i'll keep you guys posted. Smells rich but with voltmeter on board connected to the oxygen sensor shows around 0. 350 TBI acceleration problem Engine & Drivetrain. Unplug the tan/black wire, time the engine to ZERO degrees and reconnect the tan/black wire. 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. I would also look at the secondary air valve. I got the engine timed to the 6 before TDC GM spec. I have a 1991 5. Or a plugged exhaust. 3 2wd) at his advice. Motor and tranny are completely stock and i just did a complete tune up (plugs wires, cap rotor, waiting on the fuel filter back ordered at the parts store. 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. 2000 Silverado 5. 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. Bog, Hesitation, Stumble. (2000 Toyota Solara) The other day I was getting on the expressway and as I hit the gas to accelerate the engine hesitated and only accelerated at a very slow rateif I gave it too much gas it began to shake. I've got a question about my 1989 Chevrolet K2500 4x4 pickup. A year worth of head scratching. Fuel filter and pump are new. 7 liter vortecs. 7) Carter Only. Newly built Chevy 350 (96-99. The sensor that I bought is a Standard brand, number SG-12. This is a discussion on [SOLVED] chevy 1500 backfire within the Automotive Support forums, part of the Tech Support Forum category. Engines are so complicated that if they hadn't been in production for over a century, it's likely that no one would believe they'd really work. No I haven't done that yet. Sounds like a machine gun. The J-Body Organization, j-body. Also after sudden acceleration it backfires more often than not. 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. 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. If this is the one with the Chevy 350 motor with electronic ignition, you may need a new water pump. Asked in Chevy Blazer, Chevy 350 I experienced poor acceleration in my '95 Chevy blazer, which eventually. Ok so i have my car tuned up pretty well, ignition timing at about 12 degrees, brand new plugs and wires. 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. It's OK at steady speed, but not great. The sensor is new but the connection is suspect. 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. 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. I have a 1993 Chevrolet C1500 pickup with a 5. You need to make sure there is no slop at the acc pump arm to the spring. You could slowly build up the 350/350 combination and when ready put it in. 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). Took the car for an hour drive and there wasn't a single hesitation. I need help with my 89 c1500 extended can 2wd. 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. 7 Hemi has a slight vibration in either pedal (brake/gas) when accelerating and braking. 1994 Chevy C1500 350 TBI. 5) Replace the power valve. Well my problems is cured. Page 1 of 2 1 2 Next > russ130 Senior Member. I have a 100 gph Holley fuel pump. 2001 mustang GT with an '03 motor Been having an issue with my car's acceleration. I have a 1997 chevy 1500 siverado with a 5. 79 chevy g10. 1994 Chevy C1500 5. No codes were set (other than 12). Dan's Vlog 353,338 views. 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. Confirm by measuring compression, squirting oil in spark plug hole and re-measuring. 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. 350 with HEI and quadrajet, Stumble when full throttle. Home Forums > Chevy Truck Tech Forums > Chevy C/K Truck Forum > Bogging down on hard acceleration. My Vehicle was hesitating while I accelerated on the gas, almost stalling, back firing, like it wasn't getting enough gas. You could slowly build up the 350/350 combination and when ready put it in. My motorhome is 35' long and in addition to the mechanical fuel pump on engine there is an electrical one on the tank to assist in pushing the fuel to the engine. 01-01-11 06:34 PM - Post# 2025481 In response to strictlygm Take a look at 73-87 fullsize forum under 88 sud needs help Iam chasing the same problem, there is a few outhers on here with similar problems but no one ever posts if they have found a fix. any sort of bogging, can and is mostly cause by spark plugs that are Worn out! if you rev your engine alot or you replace the plugs many months or cant remember. It can cause bogging down on hard acceleration and can affect the shifting of the transmission. GM engineers can't seem to pinpoint the cause of a mysterious recurring issue in vehicles riding on GM's. Edelbrock Sputtering and Bog at WOT Acceleration! 350 c. > If I let up on pedal, it will smooth out and run fine again. Motor and tranny are completely stock and i just did a complete tune up (plugs wires, cap rotor, waiting on the fuel filter back ordered at the parts store. 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. I have a 1997 chevy 1500 siverado with a 5. It is definitely worse under load. Replaced the engine and it starts and runs fine, until you drive it under load. After messing with the connection, the truck's power has mostly been restored. When it comes to Chevrolet's vacuum-operated fuel squirters, there are two distinct camps: Those that praise the Rochester Quadrajet, and those that loath it. TBI definition. Unlike the New Beetle, an impractical fashion statement of a car, the (Real) Beetle eschewed style for utility. I'm having an issue I can't resolve with my Tahoe. Van is in great shape but is our work vehicle. it only happens under power. 4L TBI Back Fires at WOT C/K Car Forums. For some scan tools enter VIN 10th "L" 3rd "C" 8th "K". Check that and if you need to, change the squirters up or down until it gets better. Other than that, it bogs off of idle. In this tech article HOT ROD performs a muscle car engine shootout comparing the hottest small-blocks from Ford and Chevy to find out who was truly king of the hill - Hot Rod Magazine. Once it hit 2250 rpm's it started to shudder so I took it to the shop. I bought one at Pep Boys for $36 (told them it was a 1999 350 Chevy 5. 1988 c1500 with 350 bogging down on acceleration. Any suggestions are appreciated. My truck bogs down (and tries to die) when I give it gas to accelerate off of a stop. Bogging I have a 1983 25 hp sea horse and it. Dan's Vlog 353,338 views. Please post if you fined the fix as I will if I do. The sensor is new but the connection is suspect. 350 ci x 6,000 rpm = 2,100,000 is the best choice because the design of the. I run a Q-Jet and it runs great. So I had my '79 into a shop a couple of months ago. Why are you focusing on the electrical system? Bogging down during acceleration under load is a classic symptom of a lean condition in the carbs. my 1999 gmc 350 vortec 5. New 350 crate engine,bogs,low power. Very poor mileage too. At slow accel, bogs out and barely moves. Share this post. 3 engine is that it doesn't idle well, it's loud and makes awkward noises. I have a 1997 chevy 1500 siverado with a 5. The engine bogging down is a good signal to say that the alternator is working, as it tries to ramp up the current. Chevy Forums FREE technical assistance for your restoration and repair. 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. So i have a chevy 350 i rebuilt recently and have put about 50 miles on it and it ran great. 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 changed > plugs, rotor, and cap. Although it certainly could be other things, I'd look into the possibility that it might be time to rebuild the carbs. It's a 95, 4x4, 2dr, 5. 1988 c1500 with 350 bogging down on acceleration. A 305 TBI, after half throttle I get no acceleration, growls at full throttle and actually decelerates. I have a 2000 silverado z71, with 288K, recently replaced fuel pump and filter about 3 weeks ago, was running great, until last week when it started to hesitate bad and back fire under acceleration, it ran good in idle and underload until is warmed up then when you tried to accelerate it would bog down bad and start popping like tiny backfires and the more gas you give it the engine falls flat. The solution is to limit the vacuum advance so it maxes out at a lower vacuum than what the motor pulls at idle. 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. Why in the world Chevy made front wheel bearing so hard to replace on a rear wheel drive is beyond me. 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.