2000 LEXUS GS400 torque

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

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

SF0NK±03
B01956
B01856
OhmmeterTHA
E2E2
B01857
VoltmeterE2G
VG
Air
± SFI (2JZ±GE)MASS AIR FLOW (MAF) METER
SF±31
1497 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
1. REMOVE MAF METER
(a) Disconnect the MAF meter connector.
(b) Remove the 2 bolts, MAF meter, gasket and stay.
2. INSPECT MAF METER RESISTANCE
Using an ohmmeter, measure the resistance between terminals
THA and E2.
TerminalsResistanceTemperature
THA±E213.6 ± 18.4 kW±20°C (±4°F)
THA±E22.21 ± 2.69 kW20°C (68°F)
THA±E20.493 ± 0.667 kW60°C (140°F)
If the resistance is not as specified, replace the MAF meter.
3. INSPECT MAF METER OPERATION
(a) Connect the MAF meter connector.
(b) Connect the negative (±) terminal cable to the battery.
(c) Turn the ignition switch ON.
(d) Using a voltmeter, connect the positive (+) tester probe to
terminal VG, and negative (±) tester probe to terminal
E2G.
(e) Blow air into the MAF meter, and check that the voltage
fluctuates.
If operation is not as specified, replace the MAF meter.
(f) Turn the ignition switch OFF.
(g) Disconnect the negative (±) terminal cable from the bat-
tery.
(h) Disconnect the MAF meter connector.
4. REINSTALL MAF METER
(a) Install the gasket to the MAF meter.
(b) Install the MAF meter with the 2 bolts and stay.
Torque: 10.7 N´m (109 kgf´cm 8 ft´lbf)
(c) Connect the MAF meter connector.

SF0NM±07
B09000
Intake Air Resonator
PCV Hose
PS Air Hose
Throttle Control
Motor ConnectorThrottle Body Bracket
Throttle Position Sensor Connector
Water Bypass HoseWater Bypass Hose Engine Wire ClampAccelerator Pedal Position
Sensor Connector
Accelerator Cable
21 (210, 15)
N´m (kgf´cm, ft´lbf) : Specified torqueThrottle Body
Engine Cover
B01947
CoverAccelerator Pedal Position Sensor
Washer Plate
Throttle Control Motor
Throttle Position Sensor Bracket
x 5
± SFI (2JZ±GE)THROTTLE BODY
SF±35
1501 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
COMPONENTS

SF0NN±05
B01615
B01616
Forward
Down±Side
Diagonal(2) (1)
SF±36
± SFI (2JZ±GE)THROTTLE BODY
1502 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REMOVAL
1. DRAIN ENGINE COOLANT
2. REMOVE ENGINE COVER
Remove the 4 nuts and engine cover.
3. REMOVE INTAKE AIR RESONATOR
4. REMOVE THROTTLE BODY BRACKET AND
THROTTLE BODY
(a) Disconnect the accelerator cable.
(b) Disconnect the throttle position sensor connector.
(c) Disconnect the throttle control motor connector.
(d) Disconnect the accelerator pedal position sensor con-
nector.
(e) Disconnect the engine wire clamp from the clamp bracket
of throttle body.
(f) Remove the 2 bolts and nut holding the throttle body to
the intake air connector.
Torque: 21 N´m (210 kgf´cm, 15 ft´lbf)
(g) Remove the 4 nuts and throttle body bracket.
Torque: 21 N´m (210 kgf´cm, 15 ft´lbf)
(h) Slightly slide the throttle body away from the intake air
connector.
NOTICE:
When putting up the throttle body, do not hold the motor
part.
(i) Disconnect the 2 water bypass hoses from the throttle
body, and remove the throttle body.
HINT:

At the time of installation, please refer to the following
items.

Connect the water bypass hose with its discrimination
mark downward.

Install the with its craw direction for (1) forward and down±
side diagonal (engine side about 45°) for (2).