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Recent content by MNJim

  1. M

    Mercury 50 HP - Only runs on 3 cylinders until warm

    I have a Mercury 50 HP, 4 cylinder motor, 1980’s (with brown stripe). For 6 years now, it has run on 3 cylinders for the first 5 minutes then all 4 for the rest of the day. It seems like once it is warmed up it runs fine. I’ve switched parts and wires to rule out plugs, wires and coils. I am...
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