2000 LEXUS GS400 Service Repair Manual

SF0N5±02
B02037
Push
B01892
Fuel Port Hole
No.1 Fuel Filter
Cushion
Fuel Port
New O±Ring
B01893
B02038
Snap Claw
Push
B01887
New Clip
± SFI (2JZ±GE)FUEL PUMP
SF±13
1479 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSTALLATION
1. INSTALL FUEL PUMP TO FUEL FILTER
Push in the fuel pump.
2. INSTALL FUEL FILTER AND FUEL PUMP ASSEMBLY
(a) Install the No.1 fuel filter cushion to the fuel suction plate.
(b) Apply a light coat of gasoline to a new O±ring and install
it to the fuel port of the fuel suction plate.
(c) Align the fuel port of the fuel suction plate with the fuel port
hole of the fuel filter.
(d) Push in the fuel filter.
(e) Connect the fuel pump connector.
3. INSTALL NO.1 FUEL SUCTION SUPPORT
(a) Install the No.2 fuel filter cushion to the fuel filter.
(b) Push the fuel suction support, and attach the 4 snap
claws to the claw holes.
4. INSTALL FUEL SUCTION FILTER
Install the suction filter with a new clip.
5. INSTALL FUEL PRESSURE REGULATOR AND FUEL
RETURN JET TUBE ASSEMBLY (See page SF±18)
6. INSTALL NO.2 FUEL SUCTION SUPPORT
(See page SF±18)

B01874
Fuel
Sub Suction
Hose
B01878
B02043
Attach
Install
B01876
SF±14
± SFI (2JZ±GE)FUEL PUMP
1480 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
7. INSTALL FUEL PUMP AND SENDER GAUGE AS-
SEMBLY TO FUEL TANK
(a) Install a new gasket to the fuel suction plate.
(b) Connect the fuel sub suction hose to the fuel return jet
tube.
(c) Attach the fuel pump and sender gauge assembly to the
fuel tank.
(d) Install the fuel tank vent tube set plate with the 8 bolts.
Torque: 3.5 N´m (36 kgf´cm, 31 in.´lbf)
8. CONNECT FUEL TANK MAIN TUBE (FUEL TUBE CON-
NECTOR) TO FUEL SUCTION PLATE
(a) Attach the fuel tube connector to the port of the fuel suc-
tion plate.
(b) Install the tube joint clip.
9. CONNECT FUEL PUMP & SENDER GAUGE CONNEC-
TOR
10. CHECK FOR FUEL LEAKS (See page SF±1)
11. INSTALL FLOOR SERVICE HOLE COVER
Install the service hole cover with the 3 cap nuts.
12. INSTALL REAR SEAT CUSHION

SF0N6±01
B01873
Rear Seat Cushion
Floor Service Hole Cover
Fuel Pump & Sender Gauge
Connector
Fuel Tank Vent Tube
Set PlateFuel Tank Main Tube
Tube Joint Clip
Fuel Pump and Sender Gauge
Assembly
Fuel Sub Suction Hose

Non±reusable part

Gasket
x 8
N´m (kgf´cm, ft´lbf) : Specified torque
3.5 (36, 31 in.´lbf)
± SFI (2JZ±GE)FUEL PRESSURE REGULATOR
SF±15
1481 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
FUEL PRESSURE REGULATOR
COMPONENTS

B01883
Fuel Return
Jet Tube
Rubber Cushion
No.2 Fuel Suction
SupportFuel Pressure
Regulator
O±RingFuel Pressure Regulator
and Fuel Return Jet
Tube Assembly

Non±reusable part
SF±16
± SFI (2JZ±GE)FUEL PRESSURE REGULATOR
1482 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)

SF0N7±01
B01884
PrySnap ClawPry
B01886
Disconnect
Pull
± SFI (2JZ±GE)FUEL PRESSURE REGULATOR
SF±17
1483 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REMOVAL
1. REMOVE FUEL PUMP AND SENDER GAUGE AS-
SEMBLY FROM FUEL TANK (See page SF±11)
2. REMOVE NO.2 FUEL SUCTION SUPPORT
(a) Using 2 screwdrivers, disconnect the 4 snap claws from
the claw holes and remove the fuel suction support.
NOTICE:
Be careful not to damage the suction supports.
(b) Remove the rubber cushion.
3. REMOVE FUEL PRESSURE REGULATOR AND FUEL
RETURN JET TUBE ASSEMBLY
(a) Disconnect the fuel return jet tube from the clamp of the
No.2 fuel suction support.
(b) Pull out the fuel pressure regulator from the fuel filter, and
remove the fuel pressure regulator and fuel return jet tube
assembly.
(c) Remove the O±ring from the fuel pressure regulator.

SF0N8±01
B02061
Connect
Push
B01885
B02039Push
Snap Claw
SF±18
± SFI (2JZ±GE)FUEL PRESSURE REGULATOR
1484 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSTALLATION
1. INSTALL FUEL PRESSURE REGULATOR AND FUEL
RETURN JET TUBE ASSEMBLY
(a) Apply a light coat of gasoline to a new O±ring, and install
it to the fuel pressure regulator.
(b) Push in the fuel pressure regulator to the fuel filter.
(c) Check that the fuel pressure regulator rotates smoothly.
If it does not rotates smoothly, the O±ring may be pinched, so
remove the fuel pressure regulator and perform again steps (b)
and (c) above.
(d) Connect the fuel return jet tube to the clamp of the No.2
fuel suction support.
2. INSTALL NO.2 FUEL SUCTION SUPPORT
(a) Install the rubber cushion to the fuel pump.
(b) Push the fuel suction support, and attach the 4 snap
claws to the claw holes.
3. INSTALL FUEL PUMP AND SENDER GAUGE AS-
SEMBLY TO FUEL TANK (See page SF±13)

SF0N9±04
B01568
Sound Scope
B01569
B01570
Ohmmeter
± SFI (2JZ±GE)INJECTOR
SF±19
1485 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INJECTOR
ON±VEHICLE INSPECTION
1. REMOVE ENGINE COVER
Remove 4 nuts and engine cover.
2. INSPECT INJECTOR OPERATION
Check operation sound from each injector.
(1) With the engine running or cranking, use a sound
scope to check that there is normal operating noise
in proportion to engine speed.
(2) If you have no sound scope, you can check the in-
jector transmission operation with a screwdriver.
If no sound or an unusual sound is heard, check the wiring con-
nector, injector or injection signal from the ECM.
3. INSPECT INJECTOR RESISTANCE
(a) Disconnect the injector connectors.
(b) Using an ohmmeter, measure the resistance between the
terminals.
Resistance: 13.4 ± 14.2 W at 20°C (68°F)
If the resistance is not as specified, replace the injector.
(c) Reconnect the injector connectors.
4. REINSTALL ENGINE COVER
Reinstall the 4 engine cover with the 4 nuts.

SF151±01
B08999
N´m (kgf´cm, ft´lbf) : Specified torque

Non±reusable part
21 (210, 15)
21 (210, 15)
VSV Connector for EVAP
Camshaft Position Sensor Connector
No.2 Vacuum Pipe
Accelerator Cable
EVAP Hose
Noise Filter
Connector
Vacuum
Hose
Throttle Position
Sensor Connector

Gasket
PS Air Hose
Engine Wire Clamp

Gasket
Oil Dipstick and
Guide for A/T
Engine Wire
Clamp
42 (420, 31)
Fuel Pressure Pulsation Damper

Gasket

O±Ring
Fuel Inlet Pipe Delivery Pipe
21 (210, 15)
Spacer
Injector Connector
O±Ring
O±Ring
Injector

Insulator

Grommet
28 (280, 21)
Engine Cover
SF±20
± SFI (2JZ±GE)INJECTOR
1486 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
COMPONENTS