Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Hello My name is***** will do what i can to help you today.
You have alot going on here so let me ask you a few questions.
As far as the running does the unit have a fuel pump? and if so is it working?
i know you have checked the valves and cam so im guess the timming is correct? is the fly wheel key good?
going back to the idea of the engine going backwards it sounds like an out of timing problem but not so much so that it has it has run.. My other thought is that there is also a compression problem. but as you said you adjusted the valves. Have you checked the compression with a compression test?
I will have to double check the service books at work. But i think they are about 90-120psi.. Let me double check and i will message you tomorrow..
according to the service manual. 170psi min for compression.
did this answer your problem?
ok i thought i was a timing problem.. let me know..