[High-Quality Materials]:Spark tester uses high-quality materials to work in high and low temperature environments without any impact. The plastic shell is hard and the built-in copper wire can withstand high voltage current. Insulated rubber protective cover avoids leakage and ensures safety.
[Light Indication] High-intensity neon light bulbs are equipped inside. If the engine can spark, the tester light bulb will reflect the spark and shine, so as to quickly find the fault point and bad path of the spark plug.
[Function]: Can quickly and easily diagnose ignition and engine problems or defects of the car, reducing engine failure or power loss caused by ignition misfire. It is a must-have diagnostic tool for any engine with spark plugs.
[Easy to Use]: First, turn off the engine and remove the spark plug wire, connect the black connector to the spark plug, and insert the metal end of the tester into the spark plug wire. If the engine starts and the ignition circuit is turned on, the indicator light will flash.
[Widely Used]:Spark plug tester is suitable for all internal combustion engines and external combustion engines, cars, trucks, motorcycles, lawn mowers, chain saws, trimmers, snow blowers, generator engines, etc.