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    Will hotter plugs cure stall at idle problem in 1998 Mercury 175 EFI?

    The standard NGK b8uh plugs have been replaced yearly but seem to foul out when I start up and or try to shift it into gear. Appears to be getting fussier at starting. Otherwise runs fantastic!Will the next heat range higher help? What would that plug be? please help, i don't dare take any...
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