Misfire

Tiny
MOABJUNKIE
  • MEMBER
  • 1999 CHEVROLET SUBURBAN
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 180,000 MILES
Misfires right off idle. All ignition is brand new.
Wednesday, August 30th, 2017 AT 3:09 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,513 POSTS
It sounds like you have an injector that is not working right. when you had all the spark plugs out did all of the spark plugs look the same color or was one different? This will be the cylinder that is having a problem. Do you have any codes? Here is a guide to help you read them:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please let us know what you find.

Cheers, Ken
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Thursday, August 31st, 2017 AT 10:10 AM

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