Cylinder misfire, light check on

Tiny
HECTOR SANCHEZ-TREJO
  • MEMBER
  • 2009 GMC ACADIA
  • 2WD
  • AUTOMATIC
  • 111,111 MILES
What causes a Cylinder number four misfire? Not pressure.
Wednesday, March 28th, 2018 AT 4:34 PM

1 Reply

Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
How are the spark plugs were they ever changed?Also the coils go bad you can try swapping the number 4 coil with a different cylinder and see if the misfire moves to that cylinder.
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Monday, April 2nd, 2018 AT 11:18 PM

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