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  1. H

    MCM 165 overheating

    My 1987 Sea Ray with twin Mercruiser MCM 165's has a slight overheating problem with the starboard motor. Port runs at 160 where it should, starboard gets up around 195 degrees under load. It cools down at slower speeds/rpms, it's fine at idle. On the ground they both seemed to be equal as far...
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