Essential diagnostic tools - The inline spark plug tester 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.
Widely use - Our ignition coil spark plug tester fit for all internal and external combustion engines, cars, trucks, motorcycles, lawnmowers, chainsaws etc and suitable for commercial, mechanical, industrial and other engine spark plug use .
Easy to use - Shut off the engine and remove the spark plug wire, connect the tester between the spark plug and the plug wire, if spark is being sent, the tester will mirror the spark and light up.
High quality - The probe of this spark tester is made of high quality plated shaft, and rubber straight jacket and cable, which is resistant to rust and corrosion, even in high and low temperature.
After service - If you are not satisfied with our inline spark plug tester or it is inappropriate, please contact us by email at any time and we can refund or replace it for free.