2PCS In-Line Spark Plug Tester 6-12V Ignition Coil Engine System Diagnostic Tool

Product Features Practical Tool: The Engine Spark Tester Probe is a must-have diagnostic tool for any engine with a spark plug, & can quickly and easily diagnose ignition/engine outboard motor issues or a fault in the fuel delivery system Materials and dimension: the spark tester probe is made of quality plated shaft, rust and corrosion-resistant, double-ended flexible tool offers a straight boot, the internal bulb lasts for years. Premium Material: Well-crafted and made with a great protection shield so no loose wires or worry for any electrical shocks. Application: Suitable for a broad range of household, industrial and commercial uses. HOW TO USE: Simply connect the tester between the spark plug and the plug wire, if the spark is being sent, the tester will mirror the spark and light up - Find dirty spark plugs, defective points, bad cables or connections, etc.   Note Make sure your wires have a good connection.If the connection is good and the pulse doesn't