Reply To: Johnson LS37 compression

[Mike M]

Thanks so much.. I have sent off for the primer seals.. I will make sure the check valve is not stuck !! great information.. the fogging oil that mumbles recommended didn’t seem to increase the compression so I went ahead and took her apart one of the rings were stuck.. the video you have guided me threw the process of freeing it up.. it was the top piston ring.. will I need to replace the rings or can I use the ones I got? Don’t have a lot of experience in this area so I don’t want to screw up the piston.. any advice would be much appreciated.. thanks