"I think it is the impeller, y
"I think it is the impeller, yet that was changed 4 years ago. I have changed the T stat and reset the timming with a timming gun. The engine runs great, idles and mid range even full throtle. But run at wide open for longer then 2 mins and the over heat alarm goes off. I am planing on changing the impeller have order the parts for thursday, just seeing if im right in my assment of the problem. Side note the stream behind the boat decreases as the rpms increase."
"I think it is the impeller, yet that was changed 4 years ago. I have changed the T stat and reset the timming with a timming gun. The engine runs great, idles and mid range even full throtle. But run at wide open for longer then 2 mins and the over heat alarm goes off. I am planing on changing the impeller have order the parts for thursday, just seeing if im right in my assment of the problem. Side note the stream behind the boat decreases as the rpms increase."