Ewhitehead
New member
Running motor on muffs w/ no load will not overheat (175) however with boat in water on plane motor overheats (200 plus) back off plane temp. drops to (175). What I have done: New therm, New raw water pump, Pulled both heads did a valve job checked for cracks reinstalled with new gaskets, pulled risers looked inside could see no obstructions. All of this has seemed to help the problem ( will run longer on plane w/o overheating. But the engine will still overheat at higher rpm's. Anyone had this problem or have any idea how to correct this issue I would very much appreciate the input! Thanks
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