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!
Model number? Engine make and model? Twin cylinder, so have you ran a cylinder balance test? Loosen the spark plug wires, and with engine idling, remove one wire at a time, engine should continue to run. If engine dies when one wire is removed, the opposite cylinder is not firing. Test may have to run when engine is acting up to find problem. Can be a bad coil or ignition failure.