Lexus GS300/400 (2000 year). Manual — part 207

SF0NB–04

B01579

–

SFI (2JZ–GE)

INJECTOR

SF–21

1487

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

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

(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

Rotate

Upward

SF–24

–

SFI (2JZ–GE)

INJECTOR

1490

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.