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 ...

Why are we performing a spark plug test? Spark plugs are cheap ... And if it’s a lack of spark, it can be due to a bad plug, coil, ignition module, distributor, or spark plug wire.

try testing the output from the coil first. If there is no spark from the coil, there will be none at any cylinders. Simply clip the tester in place and crank the engine. The light inside the ...