What will cause spark plug on cylinder #6 to burn oil and misfire on 2008 Silverado 5.3l

Asked by Dec 08, 2015 at 02:44 PM about the 2008 Chevrolet Silverado 1500 LT1 Crew Cab 4WD

Question type: Maintenance & Repair

1 Answer

76,985

It would be worn oil control rings or a leaky valve seal. You can install a spark plug with a higher heat range which will help burn the oil off and keep it from fouling. If you just have one bad cylinder hopefully this will help keep your truck running longer.

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