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    78 Merc 140 hp inline 6 keeps fouling plugs

    I have a 78 merc 140 hp inline 6 that I can't keep plugs in it. Last year it ran the best it has ever did 40 mph but then all of a sudden I lost power and could only do 5-10 mph max. I left it over the winter and replaced the plugs from champion to NGK and the engine ran fine. This is the first...
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    77 Merc 1400 140hp very low power and does not like to idle

    I have a 1977 mercury 140 hp outboard inline 6 that all of a sudden lost power and seems like to have picked up a vibration, just seems to shake a bit more than normal. I had the carbs rebuilt last year and had the timing adjusted, and a new diaphragm in the fuel pump as well, after that it ran...
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