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71K miles, Service Engine Soon steady on. Brought to dealer and found "P0300" Engine misfire code. Dealer took out the head and cyl 1 both valves are rough black, cyl 3 valves smooth orange/red color, cyl 5 valves smooth grey ash color. Dealer will send head to machine shop to smooth out and check for other damage.
Any thoughts as to what may have caused this and suggestions for repair or replacement.
Thnx.
Any thoughts as to what may have caused this and suggestions for repair or replacement.
Thnx.