Hi there,
I would pull the spark plugs and look for a very dirty, sooty spark plug, this will indicate a leaking injector the fuel is running down the bore past the rings and washing the protective oil from the bore, this will cause rapid ring deterioration so act quickly, if you find one faulty injector it would be wise to have all injectors serviced or replaced as a group.
Mark (mhpautos)
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Monday, December 10th, 2007 AT 3:35 PM