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  1. W

    Merc 150 fresh rebuild missing until 3000 rpm 150hp

    I have about 6 hrs on a fresh rebuild of a 1987 merc 150. Seems to miss until revs are up over 3K. Works great on the top end. Trigger and stator outputs are within spec. Switchbox outputs were fluctuating on one of the banks so we swapped it out and although it stopped fluctuating it is not...
  2. W

    1987 150hp Black Max Oil line failure

    Just purchased bass boat with 150 HP BM. Oil line between pump and mixing valve blew and we lost power. Fixed line but was idling poorly, checked compression and all were good except #6 cylinder which had 75 PSI. cylinder was scored and powerhead is being rebuilt. Just wondering why #6 would...
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