Quickly diagnose problems with all ignition systems. Connect the tool between the spark plug and the plug wire. With the engine running, the tool flashes a mirror image of ignition spark.
Lisle 20610 Inline Spark Tester, Double Ended Straight Boot and 90 Degree Boot
Lisle 20610 Inline Spark Tester
Lisle Tools 20610 - Inline Spark Tester (One Size Factory)
Lisle Corporation 20610 Inline Spark Tester, 90 Deg. Or Straight
