OK, just want you to be aware; the green crud can live hidden inside the big crimp lugs at the starter and especially at the battery. Some have found it at the block lug. Those are the spots. The alternator is not involved with starting. I've seen it inside the wire insulation and only just perceptible as a bulge in the cable.

And as far as crank vs. run, well every ignition component is much better off with the engine running, even with normal battery voltage available. If there's to be a weakness fault, it is going to show up as a starting problem most every time. Your light monitoring spark may be working very well, but you have no way to tell if the timing of that spark is coinciding with the piston reaching TDC on the compression stroke. That's why you need to catch it with the light.

If, when you test this out, you can't get it to fail, try removing the injector plugs and use the timing light on the coil wire, so you get a flash at both points on the diameter of your crank pulley. You may even want to mark the opposite side. Then if you ever see a flash not coinciding with a mark, you know the EZK is messing up when that happens. Have a battery charger and an afternoon to play.


--
Art Benstein near Baltimore

"Bigamy is having one wife or husband too many. Monogamy is the same." (Oscar Wilde)