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RJQN
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After about 15 minutes
Help
After about 15 minutes at 4500 rpm the overheat alarm on my 1989 200ETXF goes off. If the motor is shut off for 5 minutes or so it will start and run again and the alarm wont go off again if rpm is kept at 3500 or lower but at this point it's rpm gets erratic. If running at say 3500 rpm the rpm may shoot up to 4000 or better. The carbs were rebuilt last year and the powerheads were just rebuilt. The overheat alarm problem was there prior to rebuilding.
The powerheads were rebuilt because I thought there might be a problem with clogged water passages plus compression was down to about 60psi. I was thinking maybe there was a problem with the engine leaning out at high rpm causing too hot a fuel burn.
Can anyone help
Thanks
After about 15 minutes
Help
After about 15 minutes at 4500 rpm the overheat alarm on my 1989 200ETXF goes off. If the motor is shut off for 5 minutes or so it will start and run again and the alarm wont go off again if rpm is kept at 3500 or lower but at this point it's rpm gets erratic. If running at say 3500 rpm the rpm may shoot up to 4000 or better. The carbs were rebuilt last year and the powerheads were just rebuilt. The overheat alarm problem was there prior to rebuilding.
The powerheads were rebuilt because I thought there might be a problem with clogged water passages plus compression was down to about 60psi. I was thinking maybe there was a problem with the engine leaning out at high rpm causing too hot a fuel burn.
Can anyone help
Thanks