A simple "go or no go" ignition coil tester identifies coils that have
failed or that are about to fail by driving a coil with sufficient
voltage and amperage to operate at its peak output. Coils that have
failed or that are close to failure cannot operate at peak output and
thus fail the test. A standard kilovolt tester is used to simulate a
spark plug and an audio indication of sparking produced by the kilovolt
tester is used to confirm operation or failure of the coil. The system
dispenses with short circuit and closed circuit test apparatus as well as
the structures and failings associated with visual spark indicators.