Mercury Damage

Randy. I ran this motor (2001 115 hp mercury) hot over the weekend to the point it shut off and would not start. After cooling engine it would start and run but then it started dropping a cylinder and then another at idle. I inspected plugs and found they were getting water in the cylinders. Is it likely this is a head gasket or have I probably done major damage?


This is bad as the motor has no head gasket. Take it apart and expect the worst.




Please submit whatever questions you have to  All questions and answers selected will be displayed on this page as they come in.  Note: though all boaters are welcome, priority may be given to I.H.R. members.  Randy can not be held responsible for any advice given.  Though his information and expertise is second to none, he has no control over what you do with your boat.  It is up to you to boat safely and act responsibly, and his advice is only to be used as a guidance for your high performance boat/motor of which you are the one responsible for the risks involved.

Mark C.


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