On May 17, 7:59 am, Mike wrote:
Hello,
I have a 5.0 ltr merc with a Bravo 3.
Its still on land as I get it ready for the season.
I put earmuffs on it and let it warm up.
After it warms up it starts to overheat.There is NO water coming out.
My question is:
What is most likely the cause, The seawater pump, the theremostat or
the circulating pump.
I'd like to try to start with the "Most likely" and work my way down.
The boat is 4 years old. I use it in the Barnaget bay from May to
October and dry dock it from there.
Thanks
Mike

Start with the pickup and raw water pump. The thermostat either
circulates the water through the engine and then out the exhaust or
diverts the water out the exhaust. So even if the theormostat was
stuck you should still see water.