| If the motor is severly overheated it will show up on a compression test. It could be a head gasket but it can also start to melt pistons. It would need to be ran a long time for any major damage to occur.
The propshaft should be done by someone qualified, there is more to it than just sliding a new shaft in. The gearcase will need to have new seals in it as well.
I see it's a 1990 135hp I can't think of the merc part # tonight it's too late I will post it tomorrow. |