Misfire, code P0301

Tiny
TEEROCK1
  • MEMBER
  • 2001 GMC JIMMY
  • 4.3L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 1,509 MILES
P0301-cylinder 1 misfire detected. I can't find the misfire.
Wednesday, March 11th, 2020 AT 8:15 AM

1 Reply

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

I would check the number one cylinder spark plug and wire for any damage.

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

Beyond that, I would check the fuel pressure and the compression as well.

https://www.2carpros.com/articles/how-to-test-engine-compression

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

Roy
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Wednesday, March 11th, 2020 AT 2:21 PM

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