Gives a visual check of the ignition system.Quickly diagnose problems with all ignition systems.Connect the tool between the spark plug and the plug wire.The tool is double-ended to offer a straight boot and a 90? boot on one tool.With the engine running, the tool flashes a mirror image of ignition spark.Shipping wt. 5 oz.
Lisle 20610 Inline Spark Tester
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