S&G / Tool Aid 23970 In-Line Spark Checker Kit for Recessed Plugs

Troubleshoot virtually all domestic and imported cars, SUV's and trucks. Use for testing newer vehicles with recessed spark plugs and conventional and coil-on plug ignition systems. Flashing bulb indicates ignition or fuel delivery problems. Provides information not available with OBD II code reading devices - pinpoints if there is a spark plug, plug wire, mechanical, fuel injection or electrical problem. Shows a duplicate view of the ignition spark so technician can visually check condition of ignition system at each cylinder. Frequency and intensity of flash indicates whether there is an ignition system problem or fault in the fuel delivery system. Safety orange color for easy visibility.