1996 Johnson V90 running hot. Engine was running fine at slow speed on Sunday when hot engine alarm went off. Warm water stream is consistent and warm, but engine will only run for 3-4 minutes and alarm goes off. Engine mifires when throttle is pushed to higher RPMs. Cannot run engine at full speed? What would cause this?<br /><br />Impeller-water is still pumping a warm stream?<br />Cracked head?
