Fuel Pressure Regulator: Service and Repair

Fuel Pressure Regulator Replacement


REMOVAL PROCEDURE




1. Relieve fuel system pressure, refer to Fuel Pressure Relief Procedure.

CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.

2. Disconnect the negative battery cable.
3. Remove the air cleaner outlet resonator.
4. Remove the fuel rail bracket (1).
5. Remove the vacuum hose from the fuel pressure regulator.
6. Remove the fuel return pipe from the fuel pressure regulator.

Fuel Rail Assembly:

7. Remove the pressure regulator bracket attaching screw (3).

IMPORTANT: If the fuel pressure regulator is to be reinstalled, inspect filter screen for contamination. If contaminated, remove and discard.

8. Remove the pressure regulator assembly (2) and O-ring (4) (discard O-ring).

INSTALLATION PROCEDURE

Fuel Rail Assembly:

1. Lubricate new pressure regulator O-ring (4) with clean engine oil, then install on pressure regulator (2).

NOTE: Refer to Fastener Notice in Cautions and Notices.

2. Install the pressure regulator bracket attaching screw (3) coated with appropriate thread-locking material.

Tighten
Tighten the pressure regulator bracket attaching screw to 3.5 N.m(31 lb in).

3. Install the vacuum hose to the fuel pressure regulator.
4. Install the fuel return pipe to the fuel pressure regulator.

Tighten
Tighten the fuel return pipe attaching nut to 30 N.m (22 lb ft).




5. Install the fuel rail bracket (1).

Tighten
5.1. Tighten the fuel rail bracket nut (4) to 10 N.m (89 lbs in).
5.2. Tighten the fuel rail bracket nut (3) to 25 N.m (18 lbs ft).
5.3. Tighten the fuel rail bracket bolt (2) to 25 N.m (18 lbs ft).

6. Install the air cleaner outlet resonator.
7. Connect the negative battery cable.
8. Inspect for leaks through the following steps:
^ Turn the ignition switch to the ON position for 2 seconds.
^ Turn the ignition switch to the OFF position for 10 seconds.
^ Turn the ignition switch to the ON position.
^ Check for fuel leaks.