Water coming from top part of engine Starboard side

[wh1tebeard]

Just bought a second hand mariner 60 HP 2 stroke. Starts first time and runs well. Noticed water leaking from a breather hole in what I think is the Thermostat Housing situated top right starboard side of engine. Age of engine is around the mid 1990. Wondering if this is the thermostat or is there a non return valve situated in this housing? Would continuous flushing of the engine cure the fault?

 

[GA_Boater]

Merged your topics, whitebeard.

Is the water from port or starboard?

 

[racerone]

If water is leaking from the vent hole than the poppit valve diaphragm has a leak.--It must be repaired ----Serial # of engine is ?

 

[wh1tebeard]

GA_Boater

Thanks for your note. It is top right Port side.

Racerone
Again thanks for your response. You confirmed what I was thinking after some more research about a leaking diaphragm.