Water in oil 2005 yamaha 90 4 stroke

[skippy1234]

Drained oil from motor,loaded with water. Not sure where to start looking. Winterized properly. Not sur where to start diagnosis.Does anybody knoe if this motor is prone to this kinf of problem> thanks

 

[multimech]

Re: Water in oil 2005 yamaha 90 4 stroke

Do a leakdown check on the cylinders. This will tell you if you have a blown head gasket, or have a cracked valve seat and etc. I have also seen corrosion on the heads allow water into the cylinders. Is it in salt water?

Don't forget to check your fuel, you might be getting water in that way.

 

[skippy1234]

Re: Water in oil 2005 yamaha 90 4 stroke

Thanks,will try leakdown test.its in saltwater