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My Monterey

1998 276 starboard engine running hot

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My 98 276 with twin 4.3's  Port motor runs around 140 all the time, going slow or at speed.  Starboard motor gets hot when running slow , around 200, cools down at speed. I put a new 160 thermostat in it and it still get's hot.  Impeller in the raw water pump is good.  Any Ideas as to why or a fix?  Thinking about just taking the thermostat out and see how it does, pro's and Con's


Thanks for the input

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