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  1. M

    need help 1990 Mercury 75hp runs rough after cleaning fuel tank and line, changing spark plugs ect

    Hi, I need some help with my 1990 Mercury 75hp, it runs rough and smokes even after cleaning fuel tank and fuel line, and changing spark plugs ect. Also there's a lot of gray oil or grease coming out of the lower unit along with the smoke. It won't won't idle at all and trys to race itself up...
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