engine missfires, runs ruff

2003 CHEVROLET SUBURBAN
143,130 MILES
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BQUENROE
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  • 1 POST
Miss fires, black smoke from tail pipe, and all the spark plugs on the passenger side look like the bottom of an old engine, full of black oil i guess. when I kick down on the excellerator the black smoke is so thick that it left black sut on the garage door. the code says random missfire. but I am confused as to why all the spark plugs on the passenger side are fouled but the drivers side are fine.
Mar 16, 2012 at 12:41 AM
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