Do all spark plugs have a healthy blue spark?

As far as running on 2 cylinders per bank, each distributor fires to 2 cylinders on each bank. The 2 center on one side and 2 outside on the other.

Hopefully your engine wiring harness was already replaced.

One way to check pull coil wire at dist cap, insert spare resistor spark plug (you should be using non-resistor plugs on your car) and ground to engine.

If it won't run when one side is pulled, that is the good side, the other side has a problem.

This engine can run fairly well when only one side is working correctly.

Test by switching parts from one side to the other:

dust shield under rotor
coil
coil wires
possibly EZL / ignition module
could still be dist cap / rotor

When the other plugs fail to fire you found your problem!


And of course check fuse(s) on the OVP relay