Well this may not apply in your case but i have added penetrating oil to closed cylindersand then a spark plug adapter and an air compressor to force penetrating oil in. I guess I’m not a patient man, just a thought.
“Which one to tap?”— I have a Johnson A-25 that is stuck but i can look into the exhaust ports and see one piston move slightly when i rock the flywheel. The other one is stuck Just another thought. Jim
2Fast4Me
