misfire

2003 GMC SAFARI
6 CYL • 2WD • AUTOMATIC
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HI BYE
  • MEMBER
  • 1 POST
a misfire on cylinder 4
Dec 24, 2010 at 5:57 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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BLUELIGHTNIN6
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 16,542 POSTS
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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