Not sure this is an 80/20 thing...

Seriously, the way I would troubleshoot this given your observations:
Make sure it isn't flooded by something like a broken fuel regulator or excessive cranking without spark. Pull the plugs, let it dry out, then replace them, check for fuel in the FPR's vacuum line, squirt in a shot of ether and see if it fires.
Then I'd follow the troubleshooting chart Phil posted after giving the Hall effect wiring a critical look for obvious signs of rotting insulation. This is NOT the wiring harness trouble that ended in '87. There are not any fuses involved with spark.
--
Art Benstein near Baltimore
A woman came home, screeching her car into the driveway, and ran into the house. She slammed the door and shouted at the top of her lungs, 'Honey, pack your bags. I won the lottery!'
The husband said, 'Oh my God! What should I pack, beach stuff or mountain stuff?' 'Doesn't matter,' she said. 'Just get out.'
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