Spark Plug Tester - - This automotive diagnostic tool is used to verify the presence of ignition in order to identify faults (eg faulty spark plugs). With the help of a candle tester, you can perform a visual inspection. Simple to use - connect spark plugs and ignition wires. The design allows you to quickly see if the ignition is working properly. You can check for ignition without removing the spark plug. High Efficiency - - Time-saving ignition tester to check the efficiency of the ignition system without removing the spark plug. Its a useful tool for anyone tinkering with or managing a fleet of equipment. Wide range of applications - - For quick and revealing the necessary conditions for ignition fault inspection of automobiles, such as cars, trucks, motorcycles, lawn mowers, chainsaws, trimmers, etc. Grass, snow blowers, generators, etc. testing method: 1 Turn off the engine and disassemble the spark plug coil 2 Connect the black tip of the tester to the spark plug 3 Connect the metal end of the tester to the spark plug coil 4 Start the engine 5 If the ignition wire is intact, the indicator light flashes Spark Plug Tester Troubleshooting all internal combustion engines is essential. Clear visualization of ignition system operation. Effectively detect faulty ignition harnesses and easily analyze any startup issues. Package Included: 1 x Spark Plug Tester Colour: Black Delivery Quantity: 1 Piece