1996 merc 40hp runs hot

[bill j]

my 40hp 4cyl. motor seems to run warmer than it should. the water coming out is very hot and the engine is hot to the touch. I cant find a thermostat on it. any help would be great.

 

[bill j]

Re: 1996 merc 40hp runs hot

puller the lower unit and chacked the water pump impeller. It was missing a piece of the impeller and it was dryrot. atleast the housing looked good.