I just redid the whole fuel system in my 86 5.o efi. I had the no start problem. Mine had two pumps. It is usually the intank sending unit one. I got all my parts through bronco graveyard. They have good prices. get some one with the fuel pressure setup gauge and roll it over and see how high it goes. If it is not kicking on it could be the ignition switch. Had to change mine too. 10 bucks for that. You should hear the pump for a couple secconds when you roll the key to go before cranking.