Trying to work out what caused this cylinder to over heat and damaged the piston. Can a carb cause a cylinder to over heat ? Maybe running too lean , can the carbs be adjusted just a thought I just want to rule out any other causes
Thanks for all the advice so far you all have been very helpful. The next hurdle is stripping down rest of engine, this I have never done, I will remove the power head next weekend any advice what to do first I will be ordering a workshop Manuel thank you once again
Good day everyone just a update I have removed front water jacket to find no t stat or spring and no poppet valve this motor must have had one. Could this be why the engine was getting hot. The other thing I noticed was the bolts were not very tight and all csme out with ease. Looks like...
What should the torque be on the cylinder bolts? trying to find a service Manuel but cant find one that covers my engine. I did find one covering 1980 50hp would that do.
In answer to heat on top cylinder just felt it with my hand and it was hot to the touch
Thank you for all your replies
I will start to remove head ect what are the signs of a damaged head gasket? I havnt striped down a outboard before any pointer to look out for
Wont be able to check t stat untill I remove the covers
The motor has been used in salt water I never put in the water...
Hi everyone, I have a Johnson 2 stroke 50hp 1983
I have noticed the top cylinder gets hot and bottom cylinder remains cool
The engine idles ok , I did a compression test on both cylinders readings at wot, top 120 and bottom 150 not to sure if they are ok. I have changed the water pump and...
