mercury/mariner 90hp 2001

[GANNET]

quick question.. got water in the oil ,gone milky. Head gasket im thinking,would that be write? thanks

[brett291]

I'm no expert, but I've had that happen and it was headgasket. Simple fix if u didn't run .motor hot.

[GANNET]

yeh i think so to,plus no.2 spark plug was covered in water. and running like shit!

[boats.net]

Yes, usually a blown head gasket is the cause of water in the oil.

[GANNET]

head gasket has now been replaced,but still running ruff.Starts fine,but runs on three.Unplugged no.2 ht lead and runs the same! two of the plugs are black and other two clean,any ideas would be great,as im running out of them myself.thanks.

[GANNET]

FU****G leads round wrong way!!!! lol