hogan12009
Seaman Apprentice
- Joined
- Apr 4, 2013
- Messages
- 33
I have a Johnson 150 1995 I think and it overheats. idle for 5 minutes and alarm goes off. Water pressure at idle is 3 pounds maybe and when reved to 4000 at idle pressure goes to 15 or so. I just hooked the alarm back up and I am worried that the engine is damaged I used the boat for ten minutes while it was like this. how long would it take to do serious damage? It does start and run strong. What could be causing the overheat?