I got a 2003 Sea Ray 220 with a Mercruiser 5.0 MPI Bravo 3. The engine will overheat 5 minutes after starting it up. I have replaced the impeller and the back part of the raw water pump (where the hoses intake and out hoses go). I have replaced the thermostat as well. The first 5 minutes warming up the engine runs perfect. Then water temp starts climbing around 200. I shut it down before it gets any hotter. I noticed that the water hardly comes out the exhaust when this happens. While it’s still warming up water is coming out the exhaust like it should. I’m at a loss with this thing. I did touch the risers and they were not super hot like the thermostat housing was. Housing was hot as hell!
Serial Number for the engine is OM653566
Thank you guys for your help!
Serial Number for the engine is OM653566
Thank you guys for your help!