Yes, that is possible.
where is the fuel pressure regulator on the fuel rail(1999 Ford Expedition)
The electric fuel pump is inside the fuel tank
Have the a fuel pump pressure tested.
The electric fuel pump is inside the fuel tank
schrader valve on fuel rail
In the right front passenger footwell , behind the kick panel ( according to the 1999 Ford Expedition owners manual )
On a 1999 Ford Expedition : The ELECTRIC fuel pump is INSIDE the fuel tank * the sending unit for the gas gauge and the pump are installed through a round shaped access hole in the top of the fuel tank
30-45 psi
Actually , it's fuel injected , so there is no carburetor
its located in the fuel tank, you will need to drop the fuel tank to access it as its in the top of the tank
The electric fuel pump is INSIDE the fuel tank on a 2004 Ford Expedition
The electric fuel pump is INSIDE the fuel tank on a 2003 Ford Expedition