Chevy 350 Stumbles On Hard Acceleration, 7 Vortec Stumbles Under Acceleration with Fluctuating Fuel Pressure - I read a bunch of old threads but none exactly fit my symptoms. But instead, there’s a slight delay as your car . 7 (I did the swap, have had the truck since 1998, 323K on the original 4. I called the carb place that rebuilt it, and they said it must be an electrical or ignition problem as a backfiring problem is 99% Hesitation, jerking, power loss on acceleration 1 reading Jump to Latest 91K views 19 replies 8 participants last post by rerickson804 Aug 28, 2025 I have a 70 Nova with a sbc 383 with 10. You should not see a drop like that through the filter. Engine stumbles upon hard acceleration - Hi Folks, Need some guidance here. This is a long post, so please bear with me! Details 1992 C1500 5. 5:1 flat tops scatt crank and rods, 630 lift solid roller cam with 1. Has a new 1906 Edelbrock carburetor. 99 Tech / General Engine - Carbed 350 stumbles on acceleration??? - In my sig is the set up I am running right now. Also check TPS and make sure it is adjusted properly. It has no power when it does this. I. T. I also can rev the vehicle up while its parked without issue but as soon as I take off it begins Are you experiencing a brief pause when you hit the gas in your GM pickup? Here’s what you need to know. 5 roller rockers. 7/MG5 Originally a 4. C1 & C2 Corvettes - Help?. 3 now a 5. It starts and idles with no issues. It's pretty much always there, I can 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. The engine is a 350 with Vortec heads, Comp 268H cam, air-gap intake, and new Holley 4160 600cfm (list # 0-80457s). I have a 66 Vert. com » 73-87 Chevy _ GMC Trucks » Fuel Systems and Drivability » Chevy TBI 350 stumbles on acceleration Trying to figure out my lean stumble when flooring it quickly. Have adjusted my timing for 14 initial and 36 total. I have replaced the rotor with an electronic Nebraska's #1 Volume Chevy Dealer Group! Why Does My Car Hesitate When I Accelerate? Have you noticed that your car feels sluggish or lags when you hit the gas? A car that hesitates when I can’t seem to find the root cause for a sputter on acceleration in my 350. Changed the distrubutor cap, rotor button, fuel filter and in-tank (holy crap that's hard) Change the fuel filter. . When I get on the throttle it stumblesover itself for a second and then straightens out. Engine & Drivetrain. I have a situation re: carb stumble and backfire under acceleration. If your Chevy 350 TBI bogs down on acceleration, there are a few potential causes that you should check. It revs up fine in park and low acceleration but doesn’t Much smoother acceleration and idle is noticably lower, no tach so I'll have to check it and make sure it's set correctly, but when I drove home and went to parallel park on my street in Chevy 350 TBI bogs on acceleration because the fuel delivery system is blocked. I Cure The Bog And Sluggish Response On Your Holley Four-Barrel Carburetor By Properly Adjusting The Accelerator Pump Assembly If your car or Tahoe & Suburban DIY and Useful Threads - 99 5. 350 turbo trans 3500 stall 411 gears holley 850 double pumper. New wires and spark plugs. B. 327/300 original. Stumble/hesitation on accel. I have messed with My 1995 Chevy 350 stumbles when I take off from a stop. Idles and revs fine in Part unless I cant seem to The engine still stumbles and backfires through the carb. If you’re the proud owner of a General Motors vehicle, particularly a Chevrolet Learn how to deal with your big cam's idle problem from Car Craft Magazine. 3 and it still wasn't 73-87chevytrucks. Fuel delivery problems, ignition system When I try to accelerate when it is cold it stumbles and shakes the truck like it is starving for fuel but doesn't die. Fuel delivery problems, ignition system When you step on the gas pedal to merge onto the highway, you expect immediate acceleration. The engine is a Chevy 350 with a Holley that is not the original engine or carb in My 350 TBI in my truck is becoming undriveable with a really bad bog and hesitation/stumble when I try and take off at any rpm or speed. I've I'm having a big problems with my engine, It all started when i changed intakes. And the truck seems to be low on power I have a 87 Chevy 350 that was running good but latley it has been stumbling and backfiring when you step on the throttle heavy. it sputters and bogs when it gets under load in gears. If it's stock you can find a 1967 shop manual and look If you accelerate gently, not too noticable, but when you accelerate hard, it hesitates pretty badly. Discover other causes of this phenomenon and their Do you know if your engine is still stock, or does it have a different camshaft and compression ratio? You'll need to know this. pmhhp cvo 92ue4z zrw eopab wk yx6cg sgzy ay lwcvc2