Brandoncrrll
New member
Just bought a pontoon boat yesterday with a 2006 yamaha F90TLR 4 stroke. Foolishly, i test ran it in guys driveway but didn't check oil as it sounded okay and he said it was good. When I got home with it, found milky oil, drained it, and removed spark plugs to find water in cylinder 2. Pulled head off to find some pretty good corrosion on the cylinder block, enough to where it looks like a new head gasket job we be pointless. Not sure how far fetched it is it "build up" with either high temp JB weld or actual welding and resurface.... so...how screwed am I? Don't have tons of money at moment and willing to put work in if it's worth it. Called around to few mechanics although haven't shown them in person and they said better off buying a whole new outboard.... yikes.
Looked into buying a remanufactured powerhead to pop on there but have also been told not worth it and also not a good idea because there are shims between block and cowling that are hard to get right.
Looked into buying a remanufactured powerhead to pop on there but have also been told not worth it and also not a good idea because there are shims between block and cowling that are hard to get right.