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International Automotive Technicians Network
Re: Checking Mode 6 for failing cat converter
Posted to Technical Discussion Forum on 7/7/2023

Hi Andrew.

Your start up misfire could be caused by a coil, but not in the traditional sense. I have seen many start up misfires caused by moisture accumulating in the spark plug tube when temperature transitions cold to hot and dew accumulation. You might s... Login to read more.