I know it isnt a mustang but pretty much the same engine just speed density and 75 less horse. I have a 91 Grand Marquis and I will try to start it and it will almost fire once and start up but then just keeps cranking. It has spark and compression and the timing is perfect, but you can here the injectors just DUMPING gas into the engine. Has anyone had any problem like this with their 5.0 if so what was the problem. I am thinking either the Computer or the Fuel pressure regulator? Please Help