2000 LEXUS GS400 Service Repair Manual

SF0NB±04
B01579
± SFI (2JZ±GE)INJECTOR
SF±21
1487 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REMOVAL
1. REMOVE ENGINE COVER
Remove the 4 nuts and engine cover.
2. REMOVE AIR INTAKE CHAMBER (See page SF±46)
3. REMOVE FUEL PRESSURE PULSATION DAMPER
(See page SF±26)
4. REMOVE DELIVERY PIPE AND INJECTORS
NOTICE:

Be careful not to drop the injectors when removing
the delivery pipe.

Pay attention to put any hung load on the injector to
and from the side direction.
(a) Disconnect the 6 injector connectors.
(b) Disconnect the camshaft position sensor connector.
(c) Disconnect the throttle position sensor connector.
(d) Disconnect the VSV connector for EVAP.
(e) Remove the 3 bolts and delivery pipe together with the 6
injectors.
(f) Pull out the 6 injectors from the delivery pipe.
(g) Remove the O±rings, grommet and insulator from each
injector.
(h) Remove the 3 spacers from the intake manifold.

B01578
Injector SST
(Attachment) Fuse Tube
(On Vehicle)
SST
(Hose)
SST
(Adapter)
SST
(Clamp)
SF0NC±03
B01938
SST (Attachment)SST (Hose)
Disconnect
Fuel Inlet Hose
B01576
SST (Hose)
SST (Adapter)
SST
(Clamp)O±Ring
Vinyl Hose
B01982
LEXUS
Hand±Held
Tester SF±22
± SFI (2JZ±GE)INJECTOR
1488 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
1. INSPECT INJECTOR INJECTION
CAUTION:
Keep injector clear of sparks during the test.
(a) Remove the nut, and disconnect the fuel inlet hose from
the fuel main tube.
(b) Temporarily install SST (attachment) to the fuel main
tube.
SST 09268±41047 (09268±52011)
(c) Tighten the flare nut on the fuel main tube.
(See page SF±1)
(d) Connect SST (hose) to the SST (attachment).
SST 09268±41047
(e) Install the O±ring to the injector.
(f) Connect SST (hose) to the injector with SST (adapter),
and hold the injector and adapter with SST (clamp).
SST 09268±41047 (09268±41110, 09268±41300)
(g) Put the injector into the graduated cylinder.
CAUTION:
Install a suitable vinyl hose onto the injector to prevent
gasoline from splashing out.
(h) Connect the LEXUS hand±held tester to the DLC3.
(i) Connect the battery negative (±) terminal cable to the bat-
tery.
(j) Turn the ignition switch ON and LEXUS hand±held tester
main switch ON.
NOTICE:
Do not start the engine.
(k) Select the ACTIVE TEST mode on the LEXUS hand±held
tester.
(l) Please refer to the LEXUS hand±held tester operator's
manual for further details.
(m) If you have no LEXUS hand±held tester, connect the pos-
itive (+) and negative (±) leads from the battery to the fuel
pump connector. (See page SF±6)

B01577
SST
(Wire)
Connect
B02009
± SFI (2JZ±GE)INJECTOR
SF±23
1489 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(n) Connect SST (wire) to the injector and battery for 15 se-
conds, and measure the injection volume with a gra-
duated cylinder. Test each injector 2 or 3 times.
SST 09842±30070
Injection volume:
60 ± 73 cm
3 (3.7 ± 4.5 cu in.) per 15 seconds
Difference between each injector:
13 cm
3 (0.8 cu in.) or less
If the injection volume is not as specified, replace the injector.
2. INSPECT LEAKAGE
(a) In the condition above, disconnect the test probes of SST
(wire) from the battery and check the fuel leakage from
the injector.
SST 09842±30070
Fuel drop: 1 drop or less per 12 minutes
(b) Turn the ignition switch OFF.
(c) Disconnect the negative (±) terminal cable from the bat-
tery.
(d) Remove the SST.
SST 09268±41047, 09842±30070
(e) Reconnect the fuel inlet hose to the fuel main tube.
(See page SF±1)
(f) Install the fuel inlet hose with the nut.
Torque: 9 N´m (90 kgf´cm, 80 in.´lbf)
(g) Disconnect the LEXUS hand±held tester from the DLC3.

SF0ND±04
B01220
New Insulator
New O±Ring
New Grommet New O±Ring
B01571
Turn
Outward
Connector
B01580
RotateUpward SF±24
± SFI (2JZ±GE)INJECTOR
1490 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSTALLATION
1. INSTALL INJECTORS AND DELIVERY PIPE
(a) Install new insulator and grommet to each injector.
(b) Apply a light coat of spindle oil or gasoline to 2 new O±
rings and install them to each injector.
(c) Apply a light coat of spindle oil or gasoline on the place
where a delivery pipe touches an O±ring of the injector.
(d) While turning the injector clockwise and counterclock-
wise, push it to the delivery pipe. Install the 6 injectors.
(e) Position the injector connector outward.
(f) Place the 3 spacers in position on the intake manifold.
(g) Apply a light coat of spindle oil or gasoline on the place
where a intake manifold touches an O±ring of the injector.
(h) Place the 6 injectors together with the delivery pipe and
3 bolts in position on the intake manifold.
(i) Temporarily install the 3 bolts holding the delivery pipe to
the intake manifold.
(j) Check that the injectors rotate smoothly.
HINT:
If injectors do not rotate smoothly, the probable cause is incor-
rect installation of O±rings. Replace the O±rings.
(k) Position the injector connector upward.
(l) Connect the 6 injector connectors.
HINT:
The Nos.1, 3, 5 injector connectors and dark gray, and the
Nos.2, 4, 6 injector connectors are brown.
(m) Tighten the 3 bolts holding the delivery pipe to the intake
manifold.
Torque: 21 N´m (210 kgf´cm, 15 ft´lbf)
(n) Connect the camshaft position sensor connector.
(o) Connect the throttle position sensor connector.
(p) Connect the VSV connector for EVAP.
2. INSTALL FUEL PRESSURE PULSATION DAMPER
(See page SF±27)
3. INSTALL AIR INTAKE CHAMBER
(See page SF±49)
4. INSTALL ENGINE COVER
Install the engine cover with the 4 nuts.

SF0NE±05
B08978
N´m (kgf´cm, ft´lbf) : Specified torque

Non±reusable partVSV Connector for EVAP
Cover
EVAP Hose
EVAP Pipe
32 .5 (325, 24)
Fuel Pressure
Pulsation Damper
Vacuum Hose

Gasket
Fuel Inlet Pipe
No.2 Vacuum Pipe
Engine Cover
± SFI (2JZ±GE)FUEL PRESSURE PULSATION DAMPER
SF±25
1491 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
FUEL PRESSURE PULSATION DAMPER
COMPONENTS

SF0NF±03
B09504
B01582
B09505
SST
SF±26
± SFI (2JZ±GE)FUEL PRESSURE PULSATION DAMPER
1492 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REMOVAL
1. REMOVE ENGINE COVER
Remove the 4 nuts and engine cover.
2. DISCONNECT CONNECTOR AND HOSES
(a) Disconnect the VSV connector for the EVAP.
(b) Disconnect the EVAP hose from the EVAP pipe.
(c) Disconnect the vacuum hose (from No.2 vacuum pipe)
from the air intake chamber.
3. REMOVE FUEL PRESSURE PULSATION DAMPER
(a) Remove the nut holding the No.2 vacuum pipe to the in-
take manifold.
(b) Remove the bolt holding the fuel inlet pipe to the intake
manifold.
(c) Using SST, remove the pulsation damper and 2 gaskets.
SST 09612±24014 (09617±24011)
CAUTION:

Put a shop towel under the delivery pipe.

Slowly loosen the pulsation damper.

SF0NG±04
B02000
New Gasket
(Large)
(Small)
New Gasket
B01582
B09504
± SFI (2JZ±GE)FUEL PRESSURE PULSATION DAMPER
SF±27
1493 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSTALLATION
1. INSTALL FUEL PRESSURE PULSATION DAMPER
(a) Install the fuel inlet pipe and pulsation damper with 2 new
gaskets.
HINT:
Different the gaskets are used for the upper (large side) and
lower (small side).
(b) Using SST, tighten the pulsation damper.
SST 09612 ± 24014 (09617 ± 24011)
Torque: 32.5 N´m (325 kgf´cm, 24 ft´lbf)
(c) Install the bolt holding the fuel inlet pipe to the intake man-
ifold.
Torque: 9.0 N´m (90 kgf´cm, 80 in.´lbf)
(d) Install the nut holding the No. 2 vacuum pipe to the intake
manifold.
Torque: 21 N´m (210 kgf´cm, 15 ft´lbf)
2. CONNECT CONNECTOR AND HOSES
(a) Connect the vacuum hose (from No.2 vacuum pipe) to the
air intake chamber.
(b) Connect the EVAP hose to the EVAP pipe.
(c) Connect the VSV connector for the EVAP.
3. INSTALL ENGINE COVER
Install the engine cover with the 4 nuts.

SF0NH±02
A07216
Location of Fuel Tank Cushion
Fuel Sender
Gauge
EVAP Hose
Hose ClampFuel Inlet Pipe Fuel Tank Cap
Shield
Ring
1.5 (15, 13 in.´lbf)
Fuel Inlet Hose
Fuel
Hose
 Gasket
3.5 (36, 31 in.´lbf)
 Gasket
Fuel Sub±Suction Hose
Fuel Tank
x 5
x 8
Fuel Tank
Vent Tube
Set Plate
Tube Joint
Clip
Fuel Pump
and Sender
Gauge
Assembly
Fuel Tank Main Tube
Fuel Tank Band
N´m (kgf´cm, ft´lbf) : Specified torque
 Non±reusable part
39 (400, 29)
SF±28
± SFI (2JZ±GE)FUEL TANK AND LINE
1494 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
FUEL TANK AND LINE
COMPONENTS
CAUTION:

Always use new gaskets when replacing the fuel tank or component parts.

Apply the proper torque to all parts tightened