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!
When cranking, does it seem to be too easy to pull? Indicating a problem with valve stuck open?
Has spark, and will not fire on starting fluid, and seems to be backfiring through the carburetor.?? If you remove the spark plug and hold finger with rag over the spark lug hole, does it have enough compression to move your finger?
Or use a compression gage!
I'm thinking you have a valve that is not fully closing! This is the OHV engine? If so, you can remove the valve cover and check the valves.
I would expect about 80 psi. Less than 60 and engine is not going to start.
OK> Let me know.