Q: Minor skip when accelerating -1985 Chevrolet C10 Pickup

asked by on September 23, 2016

I just rebuilt my 350 engine in my Chevy pickup. And there is a minor skip when I’m accelerating the truck. But the skipping got worse and its exploding back through the mufflers. Do you know how I can stop this?

Engine hesitates during acceleration Inspection $94.99 - $114.99 Get a Quote

Hello, thanks for writing in. This sounds like an exhaust valve was adjusted too tight after the rebuild, causing combustion to leak past the exhaust valve into the exhaust itself. For an in-person diagnosis, a certified technician from YourMechanic can come to your car’s location to diagnose the skipping acceleration and confirm which repairs are needed.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing


Experienced Mechanic?

Earn up to $70/hr

What others are asking

How Do the Turn Signals Work on My Car?
The turn signals (https://www.yourmechanic.com/question/how-do-you-operate-the-turn-signals) are sets of lights that use a flasher (https://www.yourmechanic.com/services/hazard-turn-signal-flasher-replacement) or timer element to cycle the correct set of lights for both the front and rear of the car, to signal other drivers when you are turning...
Gauges not working.
It really depends on if the problems are related or not, they might share the same ground but they get different signals from their respective sensors. It could be as easy as changing the entire dash gauges or it could...
My car has a duel fuel system and it sometimes runs rough
This is a common problem with duel fuel conversions. When you start the car, be sure it warms up on gasoline/petrol. Oftentimes, what happens is the LPG fuel conversion kicks in later while still running on petrol/gasoline, essentially fueling the...
Car shakes when I apply brakes doing 45mph or more and even when I don't apply brakes around 60 mph 2005 Chevy Equinox
Hello - you likely have multiple problems here: one of which exaggerates the others. Given your mileage, your front struts are likely worn (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-strut-assembly). This is important because the tire imbalance you feel at 60 mph (without braking), and the...
I have 2005 nissan quest.my car starte up fine.But when put in drive.or in gear. its jump than go die.
Hi there. It's possible that you have a few things going on with your Nissan Quest, ranging from fuel system or ignition system component failure or even internal damage inside the motor. Typically smoke is created by excessive fluids inside...
chevy silverado 1500 is slow in 1st gear but runs fine in reverse
The transmission has different clutch packs for different gears inside the transmission and you most likely have worn forward clutch packs. I would recommend having the transmission pressures checked and computer codes checked and also fluid checked for burned smell...
91 vw golf is overheating after hitting a curb. Took out thermostat just to check if that's the problem. Still overheating. Repla
If the suspension, alignment, or perhaps drive axle is damaged such that the engine becomes overloaded, the engine could overheat. Another possibility is an exhaust pipe was damaged creating a restriction. Normally, a collision won't cause any of the "typical"...

Related articles

The Best Used Cars to Buy If You Need a Lot of Trunk Space
Many Many people focus more on interior room than cargo carrying capacity. That’s natural if you have a large family or regularly carpool, but what about drivers who need to carry a lot of stuff most of the time and...
Symptoms of Bad or Failing Spark Plugs
Common signs of faulty spark plugs include slow acceleration, loss of power, poor fuel economy, engine misfires, and difficulty starting the car.
The Guide to Legal Car Modifications for All States
Vehicle Vehicle modifications (https://www.yourmechanic.com/question/what-tips-should-i-follow-about-accessories-and-modifications) can take many forms, from simple modifications such as light window tinting (https://www.yourmechanic.com/article/how-to-tint-a-car-window-by-jason-unrau) to under-vehicle LED lighting (https://www.yourmechanic.com/article/how-to-install-undercar-led-lighting-by-mia-bevacqua) to the more complex frame and suspension modifications. Laws and regulations for vehicle modifications have been set in...