Small engine won't start? This video demonstrates how to test both an ignition coil and a spark plug on a small engine. The ignition coil and spark plug are commonly replaced parts for a small engine that won't start. Subscribe to our YouTube channel to get updates on new video uploads. Do-It-Yourself and save. http://www.repairclinic.com/Video/Video-Library/41 https://www.youtube.com/user/RepairClinic | RepairClinic.com