Car won’t start until key is turned back to run position

Maybe just a stab in the dark but I had a similar problem with my stock electronic ignition. I checked voltages and wiring and couldn't find a problem. Someone mentioned in an old thread that the coil fires once when you let go of the key. That one spark is what was starting the engine. The issue was that the distributor reluctor gap was too large to trigger a spark at low cranking speeds.