1989 Eddie Bauer 5.0
As I prep for replacing the injectors and pressure regulator in my 1989 5.0( runs rough and sat up for 2 years without moving) I thought it would be a good time to try and figure why my fuel pump runs continuously. I thought that a fuel pump, once keyed to run (before starting) would build pressure, then stop. This one doesn't. The P.O. stated they replaced the fuel pump. If I correlate that with the story that the gas gauge started working when they replaced the fuel pump, and the fact that it sounds and feels like the fuel pump closest to the motor on the frame is running, I can assume they replaced the fuel pump in the tank, and not the high pressure fuel pump. Previous owner did some sketchy repairs that I'm discovering as I delve deeper into this thing. Including blocking a vacuum line on the plenum. IDK where Ford wanted it to go. Why does this thing run constantly?