Attach the spark plug to a spark plug tester, then connect the tester to the ignition wire. Start the engine and observe the ...

In this video, I’ll show you exactly how to test your BMW spark plugs, ignition coils, and coil wiring without needing a multimeter—just using the kit provided. Whether it’s a misfire, bad ...

Learning how to test glow plugs ensures your diesel engine remains reliable and efficient. Here is how to test glow plugs.

All you'll need to do to test it is remove all the spark plugs and install a compression tester. Then disconnect the coil, hold the throttle wide open, and crank the engine over several times with ...