Test Methods: - Turn off the engine and disconnect the spark plug coil.
- Attach the black head of the tester to the spark plug.
- Connect the metal end of the tester to the spark plugcoil.
- Start the engine.
- If the ignition cable is intact, the indicator light flashes.
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- Engine Spark Tester is a must have diagnostic tool for any engine with a spark plug, & can quickly and easily diagnose ignition/engine outboard motor issues or a fault in the fuel delivery system.
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- Use for All Internal & External Combustion Engines, cars, trucks, boats,motorcycles, lawnmowers, chainsaws, trimmers, snow-blowers, generators etc.
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