misfire

2003 GMC SAFARI
6 CYL • 2WD • AUTOMATIC
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HI BYE
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  • 1 POST
a misfire on cylinder 4
Dec 24, 2010 at 5:57 PM
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BLUELIGHTNIN6
  • ✓ASE Certified Mechanic
  • 16,542 POSTS
  • ASE Certified Mechanic
Will need to inspect spark plug, fuel injector and plug wire for that cylinder. Also check for scratched cylinder walls as well as burnt exhaust valve. Hopefully, it is just a fowled plug. That would be the cheapest fix.
Feb 9, 2011 at 3:02 PM
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