Home › Forum › Ask A Member › Water Getting in Top Cylinder Yamaha 40hp Twin › Re: Water Getting in Top Cylinder Yamaha 40hp Twin
The motor is clean as a whistle. Fresh water only very low hours. I think the thermostat was not opening as it should. The water would just spew out of the pee hole like crazy with a bunch of pressure and it comes from the exhaust plate/s. When I changed the thermostat it now comes out as it should. Maybe the high pressure combined with extra heat from thermostat not opening correctly might have caused a leak on the exhaust plate apparatus if there is one. I think I will try and re-torque the 16 bolts on the plate first to see if it improves or fixes the issue. If not I will still have to pull it off and inspect it.
Thanks,
Joe
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