Engine overheating

[LLocke]

Hi I have a rodman 1250 and my starboard engine is overheating I have changed the sensors and thermostat also had water pump checked but it is still overheating has anyone got ideas they can suggest

 

[kashurst]

You may need to clean out the heat exchangers. What engine is it?
Have you checked the impeller in the water pump and the water flow at the exhaust.

 

[dpb]

Also check the sea strainer (water filter)