Skip the auto shop - Our mechanics make house calls

Q: Recently purchased a 2013 Chevrolet Silverado z71 5.3L engine and truck has a rough idle and hesitation on accelerating.

asked by on

Recently purchased a 2013 Chevrolet Silverado z71 5.3L engine and truck has a rough idle and hesitation on accelerating. Throttle body fine, no codes. Put seafoam in vacuum and gave truck a tune up problem still occurring.It seems it's a pretty common issue but how can I fix it?

A: Hello. Most of the time this is caused by a...

Hello. Most of the time this is caused by an issue with the variable valve timing. Since you do not know the history of the engine it may have some sludge built up inside which is going to affect the variable valve timing. I would flush the engine oil and then run some seafoam through the intake to see if it clears up. If the problem persists then it may need a fuel injection cleaning. If you want to have this issue thoroughly diagnosed and repaired, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose this.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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

Get a quote

What others are asking

Related articles

What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.