Dapetz ® Ignition Coil Tester & Spark Plug Tester - High Voltage Ignition Spark Tester for Automotive, Engine Diagnostic Tool, In-Line Spark Analyser

FUNCTION: The engine spark tester is a diagnostic tool for any engine with a spark plug, which can quickly and easily diagnose ignition/engine outboard motor issues or a fault in the fuel delivery system. APPLICATION: Easily detect which cylinder is causing issues with this spark plug test light. Simply connect the spark detector spark plug tool between the spark plug and the plug wire then start the engine. Fit for all engines; cars, trucks, motorcycles, boat motors and other types 2 or 4 stroke, single or multi-cylinder gasoline engines. COMPATIBLE: Spark plug ignition tester for small engines and vehicles to quickly and easily diagnose ignition, engine problems and defects, and troubleshoot spark plug connections, contact points, defective cables, etc. LIGHT INDICATION: Spark plug light checker can indicate inconsistencies and sparks. Intense bright white light indicates a healthy spark while jumping and dim color indicates a weak coil or plug; Remove the guesswork by using this spark plug tester and coil pack tester, disassemble spark plug tester tool to access and replace the internal bulb. USAGE: Simply turn off engine and connect the spark plug tester between the spark plug and plug wire. If it works then the color of the light would indicate the quality of the spark.