Small Engine Troubleshooting Problems? Ask a Mechanic Now.
If it fires on both sides at different times, the diode between the two coils is bad.
If it does not run on one cylinder, you have a pushrod off on the dead cylinder.
With engine idling, and you pull one spark plug wire at a time, does engine die when either is pulled?? If it does, the opposite cylinder is the dead one, and the pushrod or rocker arm needs to e checked.
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