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1975 85hp evinrude overheating at highr rpm

bronco8693

New member
"Started to use boat this spri

"Started to use boat this spring and got an over heat alarm, so I pulled the water punp and the impeller was shot, replaced it with a new kit and changed the thermostat at the same time. engine preforms fine up to about three quarter throttle but if I take it up higher than that it sounds the alarm, if I back down and let the engine idle the alarm stops pretty quick. The heads felt to me to be about the same temp before and during a overheat alarm. I mainly use the boat for fishing but it's hot now and some tubing and sking sound good, but I am concerned that the added load will cause the engine to heat up quicker. Any help would be great. thanks"
 
"u may have gotten your therm

"u may have gotten your therm assm inst wrong,or if the old imp had come apart,its poss to have those pieces in the block,restricting flow,or in the water tube,..etc,..etc."
 
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