I think it may be a defective part inside the distributor.Either that , or
the hall sender on the firewall. Years ago, I had a Ford Fairmont w/200ci
6cyl. The PO said that it would only start when cold. He would start it up
and drive straight to work. No 7-11 coffee.So this car was worhtless to him
(and toomostother people).Once warmed up ,and if the car was then turned
off, he had to wait 2 hours to restart.Happened to me when I first bought it
(once at a 7-11).Every time. Turned out to be something down inside the
distributor.Forget what it was called.Part of the electronic ignition. The
heat caused the problem to occur.Only took about 5 minutes of running to
happen.