Runs rough when driving

Tiny
JACK D MONASMITH
  • MEMBER
  • 1998 CHEVROLET SILVERADO
  • 5.7L
  • V8
  • 2WD
  • AUTOMATIC
  • 210,000 MILES
Engine idles fine in driveway. When it is being driven, I can go about two block before it starts to spit and sputter as if its not getting gas.
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Saturday, June 25th, 2016 AT 7:34 PM

6 Replies

Tiny
ASEMASTER6371
  • EXPERT
Good morning my name is Roy and I will assist.

The first thing I would do is to check the fuel pressure. Sounds like a failing fuel pump. You can rent a tester at a parts store.

Roy
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Sunday, June 26th, 2016 AT 7:03 AM
Tiny
RENEE
  • ADMIN
Hi Jack,

Here is a link to an article from this site that features written instructions and pictures showing and explaining the process of checking the fuel pressure yourself. If you decide you would like do this yourself you can purchase a fuel pressure gauge online from sites like Amazon.com.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Thank you for visiting 2CarPros.

Kindest regards,

Renee
Admin
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Monday, June 27th, 2016 AT 9:40 AM
Tiny
JACK D MONASMITH
  • MEMBER
Fuel pressure is 58psi. Spec is 55. I have no engine check light or codes at all.
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Sunday, July 3rd, 2016 AT 4:03 PM
Tiny
KEN
  • ADMIN
I am just putting in my two cents to see if you have installed spark plug recently? here is a guide that can help you.

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

Please let us know what you find.

Best, Ken
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Tuesday, July 5th, 2016 AT 2:27 PM
Tiny
JACK D MONASMITH
  • MEMBER
I have not replaced my plugs lately, no
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Tuesday, July 5th, 2016 AT 5:33 PM
Tiny
KEN
  • ADMIN
Hey Jack,

Thats where I would start here is a guide to help you.

https://www.2carpros.com/articles/how-to-change-spark-plugs

Please let us know happens so it will help others.

Best, Ken
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Monday, December 19th, 2016 AT 11:36 AM

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