Lisle 20610 Check Spark Plugs with this Lisle Inline Spark Plug Tester 20610
SKU:LIS-20610
Lisle Spark Plug Tester.
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.
