Spark Plug Wire Puller (For older vehicles without coil packs) Multimeter (for resistance test) Spark Plug Socket Sockets (for cars with coil packs) A spark plug that’s known to work ...

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

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

In this video, I show you how to test spark plugs and coils on any car, even if the spark plugs are recessed or hard to reach. Whether you're troubleshooting engine misfires, poor performance, or ...

So the dealer did a very smart and simple test. He removed the spark plug from cylinder six and put it in cylinder five. Lo and behold, the problem followed that spark plug. Now cylinder five ...