Lisle 50850 Ignition Spark Tester

Lisle 50850 Ignition Spark Tester Features

• Quickly Checks Spark at Plug Wire.
• A handy tool to check ignition spark without removing the spark plug.
• The tool is specially calibrated to measure ignition voltage.
• Works on both standard and electronic ignition systems.
• Easy to use.
• Simply adjust calibration screw to proper gap size.
• Attach spark plug wire to end of tester.
• Clamp tester on engine to ground.
• Crank engine and check for spark.