1992 Chevy S-10 Fuel problems

Did you visually check for spark at the plugs, engine cranking? Use a gage and check fuel pressure. Some of the national brand autostores used to loan out a fuel pressure gage. Are there any applicable mil codes? Engine cranking, can you see an injector spray pattern? Use a noid lite, check for injector pulse. The voltage to the injector probably goes hot with the key on, any voltage. The ground for the injector should be controlled by the pcm.