Discussion Starter · #1 ·
Just picked up a John Deere 318 today with a P218 onan. The guy I got it from said it ran great until one day he was shutting it off and it made a strange noise. Wouldn't restart......found out flywheel key was sheared. Replaced that and still wont start. I did a compression check and the left side has 75psi and the right has 125psi. Is this a bad valve??