5.7 OSXI XDO

Frankv2122

Recruit
Joined
Jul 8, 2015
Messages
1
I have over heating problems with my 2004 5.7 OSXI. There seems to be an issue that when not moving the boat will over heat, when running open it runs good but a little hotter about 180. My mechanic says there is no raw water coming into the engine. He says he has looked at all the hoses and only found a very small leak at the heat exchanger. When we run the boat with fresh water it runs perfect. We changed the water pimp and thermostat but it still overheats with the raw water. Can anyone tell me if there are any issues with this engine or give me some helpful advice, this is costing me a fortune. Thanks
 
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