Fuel Pressure Regulator: Service and Repair

Components For Removal And Installation Of Fuel Pressure Regulator:

FUEL PRESSURE REGULATOR REMOVAL
1. Disconnect Negative (-) terminal cable from battery.
CAUTION: Work must be started after 90 seconds from the time the ignition switch is turned to the LOCK position end the negative (-) terminal cable is disconnected from the battery.
2. Remove A/c idle-up valve.




(a) Disconnect the following connector and hoses:
(1) Idle-up valve connector
(2) Air hose from intake manifold
(3) Air hose from air tube

A/C Idle Up Valve:

(b) Remove the 2 bolts and idle-up valve.

Fuel Pressure Regulator:

3. Disconnect vacuum sensing hose from fuel pressure regulator.

Fuel Return Pipe Location:

4. Disconnect fuel return pipe from fuel pressure regulator.
- Remove the union bolt and 2 gaskets, and disconnect the return pipe from the pressure regulator.
CAUTION:
- Put a suitable container or shop rag under the pressure regulator.
- Loosen the union bolt slowly .
5. Remove fuel pressure regulator.

Fuel Pressure Regulator Removal:

(a) Remove the 2 bolts, and pull out the Pressure Regulator.
(b) Remove the O-ring from the Pressure Regulator.

FUEL PRESSURE REGULATOR INSTALLATION




1. Install fuel pressure regulator.




(a) Apply a light coat of gasoline to a new 0-ring, and install it to the pressure regulator.
(b) Attach the pressure regulator to the delivery pipe.
(c) Check that the pressure regulator rotates smoothly.
NOTICE: It it does not rotate smoothly, the O-ring may be pinched, so remove the pressure regulator and perform again steps (b) and (c) above.




(d) Install the pressure regulator with the 2 bolts.
Torque: 5.4 Nm (48 in lb)




2. Connect fuel return pipe to fuel pressure regulator.
- Install the return pipe with 2 new gaskets and the union bolt.
Torque: 19 Nm (14 ft lb)




3. Connect vacuum sensing hose to fuel pressure regulator.
4. Install A/C idle-up valve.




(a) Install the idle-up valve with the 2 bolts.
(b) Connect the following connector and hoses:




(1) Idle-up valve connector
(2) Air hose to intake manifold
(3) Air hose to air tube
5. Connect negative (-) terminal cable to battery.
6. Check for fuel leaks.