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Rough start, engine missing when accelerating

Tiny
BEVERLY PERRY
  • MEMBER
  • 2006 GMC ENVOY
  • V6
  • 4WD
  • AUTOMATIC
  • 170,000 MILES
A few weeks ago I was having an issue with rough start. That went away and was fine for about a week, today the rough start was back and it would miss on acceleration and when idling, after about 30 minutes of driving it smoothed out and ran fine.
Monday, August 5th, 2019 AT 1:54 PM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon,

How long since you had a basic tune up? That would be plugs and coils?

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

Worn spark plugs could cause this issue.

Also, a failing fuel pump could cause this as well. I would have the fuel pressure tested to be sure it is working correctly.

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

Roy
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Monday, May 17th, 2021 AT 5:35 PM

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