Dead engine

My 1992 Lexus ES300 stopped running. I pulled over and turned the key. It would start and immediately stop. I'd rev it to see if it would keep running, only to disappointment.
Since then, I replaced the battery, had the alternator tested, tested the ignition coil, changed the pcv, distributor, and tested for spark. No spark and I can't smell fuel with the plug out. The car will turn, but the top half won't go. I've put too much money into it already and need some advice.