5 quick operation and Maintenance Qs

With a Pertronix, there's only so much you can check

You've replaced the coil, and even though a "new" coil can be defective, that's probably a good gamble.

Only other checks are to make absolutely sure the distributor is actually turning

That the Pertronix trigger wheel is not damaged physically

Then take a clip lead and jumper 12V direct to coil + and the Pertronix +

And, make sure the COIL wire is not bad.

I like to initially check spark with a grounded probe (clip lead and screwdriver) held "down into" so to speak the entrance to the coil tower.