In this video tech tip, Don walks the Atomic 4 owner through an operational check of the coil. By isolating the coil from a host of other variables within the ignition system, this diagnostic will usually eliminate the coil as a problem within the ignition system. He not only takes electrical resistance meter readings, but also does an actual secondary discharge test to determine the strength of the coil.
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This .wmv file will play on the Windows operating system.