fuel LEXUS LS430 2003 Factory Owners Manual

Torque: 30 N.m (310 kgf.cm, 22 ft.lbf)
HINT:
Use a torque wrench with a fulcrum length of 30 cm (11.81 in.).
Fig. 25: Measuring Fulcrum Length

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
2.INSPECT FUEL PUMP ASSY
a. Inspect the fuel pump resistance.
1. Using an ohmmeter, measure the resistance between terminals 4 and 5.
Standard: 0.2 to 3.0 ohms at 20°C (68°F)
b. Inspect fuel pump operation.
1. Apply battery voltage to both terminals. Check that the pump operates.

Fig. 27: Exploded View Of Fuel Injector Assy Components (1 Of 3)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 28: Exploded View Of Fuel Injector Assy Components (2 Of 3)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 29: Exploded View Of Fuel Injector Assy Components (3 Of 3)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 30: Disconnecting Wire Clamps From Wire Clamp Bracket On RH Delivery Pipe
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
a. Disconnect the 2 wire clamps from the wire clamp bracket on the RH delivery pipe.
12.REMOVE FUEL PRESSURE PULSATION DAMPER ASSY
a. Disconnect the fuel delivery pipe and fuel pipe by removing both right and left pulsation dampers.
b. Remove the gasket.
Fig. 31: Identifying Fuel Delivery Pipe

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
13.REMOVE FUEL DELIVERY PIPE SUB-ASSY
a. Remove the installation bolts of the water by-pass pipe No. 1 and No. 2.
b. Disconnect the connector.
c. Remove the 2 bolts.
d. Remove the fuel delivery pipe No. 1 by pulling it straight upward holding both the ends.
14.REMOVE FUEL DELIVERY PIPE SUB-ASSY NO.2
a. Disconnect the connector.

b. Remove the 2 bolts.
c. Remove the fuel delivery pipe No. 2 by pulling it straight upward holding both the ends.
15.REMOVE FUEL INJECTOR ASSY
a. Remove the injector from the intake manifold.
b. Remove the O-ring, grommet and vibration insulator from the injector.
Fig. 32: Installing O
-Ring, Grommet And Vibration Insulator From Injector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
16.INSTALL FUEL INJECTOR ASSY
a. Install a new grommet and vibration insulator to the injector.
b. Check the injector's grooves (where O-rings are installed) for foreign matter or damage. Apply

gasoline to 2 new O-rings and install them to the injector's grooves.
c. To install the fuel injector into the fuel delivery pipe, push the fuel injector while twisting it back
and forth. Install the 4 injectors.
d. Check that the injector can rotate smoothly.
17.INSTALL FUEL DELIVERY PIPE SUB-ASSY NO.2
a. Install the injector (with delivery pipe) to the intake manifold.
b. Under the above condition, turn the injector both ways by approximately 45 degrees.
c. Inserting a spacer in between, install the delivery pipe (with injector) with the 2 nuts.
Torque: 21 N.m (214 kgf.cm, 15 ft.lbf)
18.INSTALL FUEL DELIVERY PIPE SUB-ASSY
a. Install the injector (with delivery pipe) to the intake manifold.
b. Under the above condition, turn the injector both ways by approximately 45 degrees.
c. Inserting a spacer in between, install the delivery pipe (with injector) with the 2 nuts.
Torque: 21 N.m (214 kgf.cm, 15 ft.lbf)
19.INSTALL FUEL PRESSURE PULSATION DAMPER ASSY
a. Inserting 2 new gaskets in between, install the fuel main hose to the fuel pressure pulsation damper.
Torque: 39 N.m (400 kgf.cm, 29 ft.lbf)

a. Install the intake air connector pipe with the bolt and hose clamp.
Torque:
4.0 N.m (40 kgf.cm, 35 in..lbf) for hose clamp
5.0 N.m (50 kgf.cm, 44 in..lbf) for bolt
b. Connect the air hose and ventilation hose No. 1 together.
27.INSTALL AIR CLEANER INLET NO.1
28.INSPECT FOR FUEL LEAKS (See ON
-VEHICLE INSPECTION )
29.INSTALL V-BANK COVER
Torque: 5.0 N.m (51 kgf.cm, 44 in..lbf)
30.CONNECT BATTERY NEGATIVE TERMINAL
Fig. 34: Identifying Wire Clamp Bracket

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

COMPONENTS
Fig. 35: Exploded View Of Fuel Pump Assy Components (1 Of 2)

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 36: Exploded View Of Fuel Pump Assy Components (1 Of 2)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.