Hard starting assistance please.

NOTE/ EDIT...........I assumed when I posted the below, that you have a Mopar breakerless ignition? Or do you have something else? MSD for example DOES NOT have DC voltage at the coil


Couple things.

You want to be careful..............

If you check spark "under the hood" by jumpering the starter relay, you change the conditions and the coil does not get full battery power as when using the key, and spark can be weak........so rig a test gap and use the key to crank

A stock resistor/ radio coil wire can give you false indication........so use a solid wire, even low voltage wire, hung "out in the breeze" to a test gap

Check coil POS with key on in "run" position, engine stopped. With battery near 12V (not undercharged) you should see anywhere from 6-8 V to coil, not much more. This shows that the coil is drawing current and through the IGN box to ground

Coil + when cranking "with the key" should be "same as battery IE 10.5--11V or so