misfire

2003 GMC SAFARI
6 CYL • 2WD • AUTOMATIC
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HI BYE
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a misfire on cylinder 4
Dec 24, 2010 at 5:57 PM
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BLUELIGHTNIN6
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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