I have rebuilt a 1994 302 and placed it into a 1993 bronco. Not able to start engine. Engine cranks but will not fire. Have spark and fuel to injectors. I have the 1993 wiring harness in place. I need some ideas on which direction to head in the troubleshooting process. Is it an air sensor issue? Is this something that can be jumped out just to make it run? Any help would be appreciated.