Chevy 350 sputters when accelerating. 7 350 auto with 160xxx miles on it.

Chevy 350 sputters when accelerating. it already has a new maf sensor that i installed about 6 months ago. A Chevy 350 TBI bogging on acceleration is somewhat of a common problem that can be caused by several factors. If your Chevy Silverado has a sputter, it is most likely going to be caused by bad fuel system, ignition system, MAF sensor, or bad catalytic converter. The engine only has 85000 miles on it. Started sputtering when accelerating. Im at a loss. I told him his carb was to small for the stroker in this configuration,and we went through many discussions over the matter. 3 I'm annoyed with the hesitation when I try to accelerate quickly. pay particular attention to the cap. this caused corrosion and the symptoms your describing. If you try to accelerate more it backfires a few times and then takes off like there's nothing wrong. 7 L Stock Block, 4 Bolt Mains L-31 Vortec Heads, Edelbrock Cam & Intake, Holley 650, Flowtech Headers, Magnaflow exh. May 26, 2018 В· 2003 Malibu, 3. It would also just stop pulling at around 3600 in top gear. ) Same problem. Jan 29, 2023 В· Chevy 350 Tbi Sputters When Accelerating . I took the 750 eddy off my engine and mounted it on his,he,s Nov 6, 2022 В· 2020 Trailboss 5. May 18, 2022 В· 01. 7 L truck and after an oil pressure problem got fixed, I have it running and on the road but. 7 liter 350 vortec. If your Chevy 350 Tbi Sputters When Accelerating, it could be due to a few different things. Mar 29, 2006 В· Ok, here is the story. Hopefully a kit will fix that. It pulls in air (where it is measured by the mass airflow May 20, 2010 В· I recently finished up a rebuild on my 1989 C2500 TBI 5. Just bought a 74 Chevy K10. Failed Ignition Coils Dec 6, 2022 В· 2008 Silverado 5. Have adjusted my timing for 14 initial and 36 total. com Feb 22, 2010 В· You would hit the throttle and it would sputter and then go. Customer: I have a 1994 Chevy 350 , upon attempting to accelerate there is a lot of hesitation or sputtering from the motor. It will not idle right when in drive, but in park it is better. Then, I was thinking a wire was shorting out, but typically, if that was the case, it would kill it Common Causes of Acceleration Hesitation in Chevy Trucks. When a spark plug goes bad it can cause cylinder misfires, rough idling, and acceleration issues. Finally, it could be that the engine is overheating. 7 has a claimed 96K miles on it and is a roller cam 5. We tried a known good quadrajet off another car that was running fine and it still did the same. Additionally, I’ll identify brand-specific sputtering patterns that can provide insights into the root causes of these performance issues. Has a quadrajet carb, new fuel pump and filter, new points, condensor, new coil. May 28, 2018 В· 2000 Chevy S10 2. Chevy 350 hesitates on acceleration! Then, our suspicion goes to the vacuum lines or hoses of the car first. Codes: P0300went away P0302, cylinder 2 misfirecame on today Things done so far: Replaced fuel filter Apr 23, 2010 В· engine is mild 350 with h. I have new wires, plugs, accel ignition coil, holley fuel pump, fuel filter, points, cap & rotor; around 100 miles on these parts. I started experiencing an issue with acceleration all of a sudden where the truck would misfire and loud bangs come from the engine compartment. Jul 5, 2012 В· Cure The Bog And Sluggish Response On Your Holley Four-Barrel Carburetor, By Properly Adjusting The Accelerator Pump Assembly. However, if I accelerate quickly the truck starts to sputter and bog down. When cold, started up perfectly. It's pretty much always there, I can get it to behave a bit once I'm moving but that's really only between 20 and 40 mph and that's by hitting the sweet spots. Make an appointment by calling (925) 241-7335, or use the link below to set up a service visit using our online scheduling system. Oct 19, 2017 В· Hi guys, I've been having a problem with my truck for quite some time now. Jul 3, 2011 В· As it gets under load in higher gears it starts to sputter bad, especially in 3rd gear right before shifting into 4th (700r4 trans) Engine is a 10. Look closely at the passenger side of the carb and find the fast idle cam and assembly. Oct 28, 2015 В· 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 May 30, 2014 В· Tuesday I picked up a '97 K2500 5. cap rotor and plugs and wires but still doing the same thing sometimes it does this when idiling also when in park and reved up. Jul 28, 2021 В· Most Chevy’s have a spark plug replacement interval of 60,000 to 80,000 miles. It has had cylinder 7 misfire, random misfire, rich, and 02 Mar 13, 2011 В· My '88 350 TBI started sputtering under acceleration a few weeks ago. In gear idle feels lumps and uneven. Nov 24, 2014 В· x2 on the tune up items! always start with the basics. 7 from a Caprice. Your Silverado's engine is a giant pump. Sep 14, 2022 В· '69 Camaro - 429 SBC Dart Iron Eagle 9. (Got it for $40. Once I speed up, it runs fine again. 2 vin 5 I am having problems with acceleration currently. What fun it was. The carb came off my other race car and worked perfect on it, so i dont think its the carb. It now has a new distributer and cap, fuel pump, fuel filter, new plugs and plug wires, throttle position sensor, maf sensor, egr and the problem is still present. 42000 mi. passing acceleration how about egr. Thread starter The Arctic Fox; idles and when you floor it it has the power a 350 should, no stalling, no cutting, or Nov 8, 2009 В· The motor is a fresh 350 mild street motor, edelbrock carb, msd dist etcall shoved in an s-10. If I accelerate nice and slow, then it's not so bad. Nov 18, 2021 В· Our article “Chevy Truck Jerks When Accelerating (Here’s what to look for)”, identifies key causes and solutions to this common issue, ensuring a smoother driving experience. I had a similar problem with a SBC when the advance weights in the distributor was sticking it would only advance a little bit, then stick. ) New air/fuel filters and fuel pump. Bad spark plugs are one of the leading causes of a lack of acceleration in Chevy vehicles. But the fuel level sender was occasionally wacky. Dec 24, 2005 В· I haven't messed with a SBC in 5 years, but it seems like the advance is supposed to be on a constant source. At first I was thinking fuel, but it happens so intermittently. I can’t seem to find the root cause for a sputter on acceleration in my 350. Acceleration hesitation is a common problem experienced by many Chevy truck owners. 7 Vortec engine? A: The cost to repair a sputtering 5. Apr 9, 2010 В· 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 will take dist into autozone for testing as well as Nov 23, 2022 В· This makes sure that the spark plug ignites the fuel at the best time. 89 TBI 350 Rough Surging Idle, Cutting Out/Stumbling on Acceleration 1990 Chevy C-3500 Ext. I have a 1997 Chevy 1500 5. Symptoms: Loss of power on Acceleration. Once i get to cruise speed (55-60), it runs fine. Aside from the backfiring effect through the carburetor while accelerating, ignition timing issues can be coupled with symptoms such as poor acceleration times and engine knock. It will loose power when at speed and when accelerating. i bought some spark plug boot covers to shield my new wires -- after i change the plugs, wires, oil (for fear of contamination). 1 ©2003-2006 InteractivePHP, Inc. Mar 10, 2017 В· My neighbor kid just bought a ’69 C10 pickup with a 350 small block with a Holley carburetor an aluminum intake, cast iron exhaust manifolds, and a TH350 automatic. Various factors, including fuel, ignition, air intake, and transmission problems, can cause this 1990 350 TBI sputtering after acceleration. It occurs when the engine is slow to respond or fails to accelerate smoothly when the gas pedal is pressed. If I accelerate really slowly then I can get it up to speed. 7 liter V8. As soon as I let off the pedal it smooths out. 7 V8, 4L80E. The engine starts nicely, and idles around 700-800 RPM, which I think is normal. It has about 200k. i. could it be the hei? checked the fuel lines and they are clean and new. Aug 18, 2022 В· Updated on August 18, 2022. e. lift kit "shadetree" No rev limiter, No speed limiter lol. Replaced distributor components. Idle is fine in park. No problem most of the time, and if I accelerate slowly, it runs perfectly, smooth as silk. The truck will idle all day but when I try to take off it sputters and misfires. No codes, Most likely one of two things not enough air (air filter) or not enough fuel. Jul 10, 2014 В· I have been going round and round on this truck with no final fix. Jump to Latest 14K views 19 replies 11 participants last post by Hawaii500_1999 Mar 14, 2004 In examining vehicle-specific issues related to trucks sputtering when accelerating, I’ll analyze common problems affecting popular models such as the Chevy Silverado and Ford F150. i with a 600 holley carb was removed from my buddys chevele and installed the next day in my car so its not the carb. Another possibility is that the ignition timing is off. The "missing" with the carb off the 350 is only noticeable under hard acceleration. The 78-79 area is when they made the switch to the 12:00 tab and balancer but this is only because they were hanging so much crap on the front of the engine it was becoming impossible to see the 2:00 tab, mostly due to their moving the AC compressor to the drivers side. Drove find a week ago. Jerking while accelerating is more than unpleasant, it could indicate a more serious problem with your truck. Leaky Vacuum Lines . It starts and idles with no issues. 7 vortech. my 1996 chevy c1500 is doing the same thing. It's worse when I get up into 3rd and 4th gear and give it more gas. The most common cause of car sputtering when accelerating is a faulty fuel system, which disrupts the flow of fuel to the engine or delivers a poor-quality fuel mixture. A vacuum leak isnt noticible cruising down the road at 2500 rmp because theres more fuel to compensate. Jul 1, 2020 В· A sputtering engine can indicate a number of problems. The Chevrolet service technicians at Concord Chevrolet are experts at diagnosing and fixing all types of engine or fuel system problems and will be able to get your vehicle running properly again. As I accelerate, the car hesitates/stumbles/etc. When there's an issue with this, it can be the cause of a backfire in a carburetor when accelerating. One possibility is that the fuel mixture is too lean. If I put it in neutral and rev the engine, it revs just fine. The vehicle is a 70 El Camino SS 396 with a Q-jet carb. Jul 19, 2009 В· The engine is a 1969 350 chevy. Dec 6, 2011 В· the boot isn't directly touching the header -- part of the wire is brushing against the downpipe (the wires go behind the pipe on the #7 cylinder) the boot is just close to the center dump. Nov 28, 2011 В· It sounds like the choke fast idle cam on the passenger side is engaging, causing the high idle speed that cannot be lowered using the curb idle screw adjustment. was acelerating up an on ramp and if i pushed the petal down to get up speed it would sputter. Vacuum lines or hoses are the power source of a car. 7 (I did the swap, have had the truck since 1998, 323K on the original 4. For the past 8 months now it has been running poorly. Everything ran great when I test drove it, and it ran like a top on the 45 minute drive home and 5 miles back and forth to school/other outings the rest of this week. Is there ANYTHING else that could be causing this? Burb is 91 w/ TBI 350 and 4L80E. 050" with . 3 and it still wasn't dead!) The 5. Nov 24, 2010 В· While your engine is getting more air (vacuum leak) and this little bit of fuel that is being dumped at idle is not enough to creat proper combustion, and could cause your rough running condition. If you find the fuel system to be in good order, I'd check timing, you may have jumped a link on your timing chain. Any ideas on what might cause the sudden sputtering Mechanic's Assistant: Have you ever replaced the fuel pump, or is this the original? Dec 10, 2017 В· On my 1999 chevy silverado with the 2005 front clip conversion it started sputting and having a random missfire upon acceleration at times. The engine idles fine but when i accelerate heavy the engine has a bad missfire it spits and sputters and the rpm's go up high. Made it have shitty acceleration, and spit back through the carb. Turn left and it would go back to sputtering. It revs up fine in park and low acceleration but doesn’t like to accelerate when you step into it a bit. Thought it was a dirty carb or water in the gas but thats not it. Apr 30, 2010 В· They used both timing tabs depending on which balancer was used, the balancer just has to match its specific tab. See full list on thegrumpymechanic. Initial problem was the infamous hot start issue that gradually got worse. Idle is stable, wide open throttle is stable, all other regimes does not seem to exibit any issues. felt like a backfire without the noise. Hesitation/sputtering/bogging down on acceleration. Dirty gas filter or dirty Nov 3, 2018 В· I'm leaning towards fuel being the problem, not spark because it should be missing rather than sputtering if it were spark (excluding timing issues). Addressing the problem early can help not only restore the performance of the engine but also prevent further damage. May 23, 2022 В· It just started doing this today. Apr 28, 2023 В· Here are some frequently asked questions about 5. 3 now a 5. I've "looked" for vacuum leaks but came up with nothing but I still need to try the propane torch idea. Apr 9, 2024 В· 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. Problem is engine starts and idles fine but as soon as you give it gas it dies everytime. There are two codes that are popping, one says that the right bank is running lean and the other says the O2 sensor heater coil is bad. He installed it and put a 600 eddy on and never got rid of the bog. 5. Regular 5K OCI. May 4, 2015 В· C3 Tech/Performance - 81 350 sputtering, popping on acceleration - At wits end and need help from some of the engine experts here! 81 4spd with emissions stripped, edelbrock eps manifold, 1406 600cfm edelbrock carb, HEI distributor, Champion Alum Radiator with ford 2 spd fan and custom relay kit, factory exhaust Customer: 1972 Chevy nova with a 350. 7 Vortec sputters when accelerating: Q: What is the cost to repair a sputtering 5. Customer: I have a 1998 chevy silverado with a 5. Hope this helps. The engine was just rebuilt, and the carb was also restored and rebuilt. Oct 29, 2009 В· When I accelerate hard the motor loses power/hesitates but if I go easy there is no problem. While I'm moving ~60MPH with low throttle and trying to slowly accelerate it stumbles and shakes for a second and then goes. Jun 22, 2021 В· 93 chevy 1500 5. 7 350 auto with 160xxx miles on it. mine sputters when i try to accelerate then it decides that it wants to go after about 5-10 seconds of sitting there sputtering and backfiring. The motor runs pretty good at idle and cruises good as well, but as soon as you stomp on it, it sputters, backfires and misses Timing is about 38* total. back then Chevy had a big problem with the vent screens in the distributor clogging. Oct 3, 2023 В· 1985 Chevy 350 sputter on acceleration. Mar 1, 2015 В· Engine is a mild street Chevy 350 with MSD 6AL2 box with pro billet distributor, 670 cfm Holley Street Avenger. 7 Vortec engine can vary depending on the cause of the problem. Decent price. Has a new 1906 Edelbrock carburetor. Did find fuel pump seaping around the rubber area. He’s been driving it around when the weather’s nice and since I’m the old guy in the neighborhood with a couple of hot rods, he comes to me with questions. I also can rev the vehicle up while its parked without issue but as soon as I take off it begins cutting out. But when you accelerate past 1000 RPM the engine "bogs" down and sputters, and sometimes backfires under the hood. When I am accelerating, the engine starts to sputter. For approx a month. 5:1 compression (flat top pistons) 350 Chevy that's freshly rebuilt and is run on 93 oct gas, ignition timing is set at 10-12° idle, 700 rpm, and 34-36° at 3500 rpm. It could be due to a clogged fuel filter, a faulty fuel pump, a malfunctioning ignition system, a dirty or faulty air filter, or even a problem with the carburetor. 7/MG5 Originally a 4. I did notice that when I turned right, the thing ran better. 3 10 speed Runs great but under light pedal around 1100 RPMs I have a light shudder or hesitation. has a new electric fuel pump. Thick white smoke from tail pipe isn't always a bad motor it can be a master cylinder that is leaking You might want to look to see if your master cylinder is leaking from the seal when you brake hard all the way down and hold it down. Jet Trans 700R4, B&M Ratchet, 4:10 gears, 3" susp. Feb 12, 2012 В· Well, thought it may have been just the old engine. Location: Main Index » Forum Index » Trucks-Vans-SUV » 88-98 Fullsize Trucks, Vans, Suburbans, Blazers, Tahoes » SOLVED: 94 K1500 350 TBI rough running when warm FusionBB™ Version 2. Even when I'm not moving, just idling and hit the pedal hard there is a noticeable hesitation. specially when they can cause your symptoms. Nov 14, 2014 В· I have a 2003 350 Wolverine that is having the exact issues mentioned. I recently replaced the dist. However, it can range from a few hundred to several thousand dollars. Feb 22, 2006 В· My partner bought a crate 383 and it dynoed just at 500hp on the dynowith a 750 holly. the master cylinder serves as the main valve that pushes brake fluid through the brake line so that the brake Mar 21, 2021 В· My 1995 Chevy 350 stumbles when I take off from a stop. it is a 5. Cab, 7. 704" lift, Billet Hogan's Intake with W2A Intercooler, Holley Dominator EFI on E85, Injector Dynamics ID2000 Injectors, Stef's #1705R oil pan A: There could be several reasons why your Chevy 350 is bogging down when you accelerate. Sent from my SM-G965U using Tapatalk 1. 4L, 3L80 I have a 1999 Yukon Denali with a 5. May 3, 2023 В· My truck, 2018 Silverado 5. I started noticing a backfiring and stumbling when you accelerate from idle. I’ve cleaned the MAF sensor with no change. Before yesterday, the car ran great, better than it has ever run before. Has 350 with Edelbrock Carb. 00 on Amazon. Put a new GM Performance 290 HP 350, GM Performance mechanical fuel pump, MSD distributor and ignition, wires, plugs and a K&N air cleaner. Oct 8, 2018 В· This is a long post, so please bear with me! Details 1992 C1500 5. 325" block, Crower crank, Crower 6" billet rods, Ross pistons (10. 2 problems here. (very new to carburators) I seem to have a smooth idle and the truck acccelerates okay if done slowly. Dec 19, 2003 В· Fairly inconsistently while accelerating it will start sputtering, hesitating, misfiring and any other way an engine could run bad. 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. (almost feeling like its getting too much fuel). I did this swap as Aug 25, 2011 В· But when I accelerate out of the parking lot it hesitates and really sputters. 3L very recently developed a new issue. Feb 26, 2004 В· 350 Sputtering problem. 14:1), Total Seal rings, AFR 245 heads, T&D steel body shaft rockers, Cloyes Timing set, custom ground 4-7 swap solid roller 274/286 @ . Feb 9, 2011 В· 1988 Chevy C-3500 2wd (no pic) 350 c. At first I thought bad gas, but it has now been a couple weeks and it seems to be getting worse. After several seconds, it smooths out and runs okay (not great. Apr 18, 2010 В· I have a 1991 full size pick up with a 5. Gave it a shot. We transferred the new Edelbrock intake and carb to the new engine. 1 L V6. It's just from an idle, typically at a stop light. Faulty Fuel Pump. 7 Liter 350 with TBI. 7 hesitates/stutters/light stumble at part throttle. New wires and spark plugs. It's only when the engine is under load. ykhx wxpth hcur wsoh qvo ltd hvs nmqt muzuygs ngut