I have a 1996 mustang gt that will crank and fire but wont run. I have checked the injectors and they are good. Fuel rails they are good. I have checked almost everything and it's killing me. It will stay running as long as I'm spraying starter fluid in the throttle body so that's why I'm assuming it's not getting enough fuel. I can turn the key to the on position and hear the fuel pump hum so that's why I figured it was good. And then I tested the fuel pressure and it was only 10 psi while cranking. Should it be higher while I'm cranking? Help is surely appreciated right now