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Dave Noll · 01-09-2022, 01:25 AM

Out of the car, 2 ways. Check the coil tower for carbon tracking or cracks & check the primary and secondary circuits for resistance with a DVOM.

A 3rd way is on the car. Hook up an ignition oscilloscope to the ignition system on the car, pull 1 plug wire, start the car and see how high the spike on the disconnected cylinder goes on the scope screen.

01-09-2022, 01:25 AM	#2
Dave Noll Senior Member Join Date: Nov 2007 Location: Div. 6, Eastern, WA Posts: 710 Likes: 2,671 Liked 240 Times in 112 Posts	Re: coil? Out of the car, 2 ways. Check the coil tower for carbon tracking or cracks & check the primary and secondary circuits for resistance with a DVOM. A 3rd way is on the car. Hook up an ignition oscilloscope to the ignition system on the car, pull 1 plug wire, start the car and see how high the spike on the disconnected cylinder goes on the scope screen. __________________ Dave Noll, EF/S ,?/SA 6526