Cylinder misfire, light check on

2009 GMC ACADIA
111,111 MILES • 2WD • AUTOMATIC
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HECTOR SANCHEZ-TREJO
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  • 1 POST
What causes a Cylinder number four misfire? Not pressure.
Mar 28, 2018 at 4:34 PM
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SATURNTECH9
  • ✓ASE Certified Mechanic
  • 30,869 POSTS
  • ASE Certified Mechanic
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.
Apr 2, 2018 at 11:18 PM
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