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  1. M

    1984 OMC plugs foul

    Pulling my hair out. 5.7 OMC plugs are black and sooty. This just started this season. Boat will run fine at WOT but as soon as I go back to idle it drops cyliders. Replaced coil, points, wires. This happens on cylinders 1,3,7 and 2. The rest of the plugs are fine. Compression was checked...
  2. M

    1984 OMC Oil pressure sending unit

    In my boat this past Saturday. Look down and no oil pressure. Shut the motor off, have my buddy tow me to shore. Get a mechanical gauge, I have gobs of oil pressure. Test gauge as per Seloc manual, gauge is fine. Replace sending unit, gauge pegs out. Question: Do I need to get an OEM...
  3. M

    OMC Stringer

    Based on what I read, Merc is better. Not knowing anything about them, what makes the stringer so bad if its taken care of? Boat I just bought has one.
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