Caution: Gasoline or gasoline vapors are highly flammable. A fire could occur if an ignition source is present. Never drain or store gasoline or diesel fuel in an open container, due to the possibility of fire or explosion. Have a dry chemical (Class B) fire extinguisher nearby.

1. Relieve the fuel pressure. Refer to Fuel Pressure Relief .
2. Remove the intake plenum. Refer to Intake Plenum Replacement in Engine Mechanical.
3. Place a shop towel under the fuel pressure regulator to absorb any lost fuel when removing the regulator.
4. Remove the atmospheric vent hose from the fuel pressure regulator.
5. Remove the bolt in the clamp that retains the fuel pressure regulator.
6. Spread the clamp enough to allow it to be removed from the fuel pressure regulator.

Important: Note the position of the atmospheric vent on the fuel pressure regulator so that it can later be installed in the same position.

7. Twist the fuel pressure regulator while pulling out to remove it from the fuel rail.

1. Apply a few drops of clean engine oil to the O-rings on the fuel pressure regulator before installing it into the fuel rail.
2. Twist the regulator while pushing it into the fuel rail until it is seated.

Important: Be sure to locate the atmospheric vent on the fuel pressure regulator in the same position that it was originally located in.

3. Install the clamp and bolt on the regulator.

Tighten
Tighten the clamp bolt to 5 N·m (44 lb in).

4. Install the atmospheric vent hose on the fuel pressure regulators port.
5. Connect the negative battery cable.
6. Using the scan tool turn on the fuel pump to pressurize the system.
7. Check for fuel leaks.
8. Install the intake plenum refer to Intake Plenum Replacement in Engine Mechanical.