Fuel System
The vehicle:
- Is equipped with a multiport fuel injection system.
- Has separately controlled fuel injectors mounted to the intake manifold for each cylinder.
- Has fuel injectors that are supplied with pressurized fuel from the fuel pump through the fuel injection supply manifolds.
The 5.4L 4V engine:
- Has a fuel injection supply manifold which is equipped with a fuel pressure regulator.
- Has a fuel pressure regulator controlling the pressure going to the fuel injectors.
- Has excess fuel to the fuel injectors returned to the fuel tank.
The 4.6L and 5.4L (2V) engines:
- Have a returnless fuel supply manifold.
- Have a fuel pressure regulator mounted to the fuel pump assembly inside the fuel tank.
- Have a fuel injection supply manifold which is equipped with a fuel pressure damper.