I have a Nissan Nomad 50 with a no start problem.
The unit has sufficient spark at 15kv to 30kv, has 160 lbs of compression, good timing, and has a new carburetor, vaporizer and lock-off. Unit will start and run for approximately 1-3 minutes, and runs well, though still has trouble idling. Note: Once it stalls it will not restart.
The unit has 12 volts to the distributor, and I tested reluctor ring. Pickup test could not verify, was faulty, readings were all over. Takes a lot of ether to start after it has run the first time and will not restart.

Could it possibly be the distributor? Or LP?
Note: Distributor has integral coil and ignition module.