'72 Duster starting And Running Problem

Four pin ecu is fine, need to check for power at ignition coil. Somewhere in this forum is a troubleshooting guide,with an ohmmeter and a test light you can find exactly what part is faulty. Price of the tools is cheaper than replacing parts willy-nilly.btw,ignition rarely causes a sputter, but a fuel problem does.

Pull dist cap and see how much up/down movement it has.