Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!
Valve is open when spark is occurring. You have a valve that is open, or the timing is off at the flywheel to crankshaft key.
I see question is still open, did you find problem?