1996 TOYOTA T100 engine

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P25123 Non−reusable part Vacuum Sensing
Hose
 O−RingFuel Pressure
Regulator
Fuel Return
Hose
− MFI (3RZ−FE)FUEL PRESSURE REGULATOR
MF−13
965 Author: Date:
1996 TOYOTA T100 (RM449U)
FUEL PRESSURE REGULATOR
COMPONENTS

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P14968
MF−14
− MFI (3RZ−FE)FUEL PRESSURE REGULATOR
1996 TOYOTA T100 (RM449U)
REMOVAL
1. DISCONNECT VACUUM SENSING HOSE FROM FUEL
PRESSURE REGULATOR
2. DISCONNECT FUEL RETURN HOSE FROM FUEL
PRESSURE REGULATOR
HINT:
Put a suitable container or shop towel under the pressure regu-
lator.
3. REMOVE FUEL PRESSURE REGULATOR
(a) Remove the 2 bolts and the fuel pressure regulator.
Torque: 8.8 N·m (90 kgf·cm, 78 in.·lbf)
(b) Remove the O−ring.
HINT:
At the time of installation please refer to the following items.
Install the pressure regulator with a new O−ring.

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− MFI (3RZ−FE)FUEL PRESSURE REGULATOR
MF−15
1996 TOYOTA T100 (RM449U)
INSTALLATION
Installation is in the reverse order of removal (See page MF−14).

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SF0AP−03
P24765
P25103
Ohmmeter MF−16
− MFI (3RZ−FE)INJECTOR
968 Author: Date:
1996 TOYOTA T100 (RM449U)
INJECTOR
ON−VEHICLE INSPECTION
1. 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 your finger.
If no sound or unusual sound is heard, check the wiring connec-
tor, injector or injection signal from the ECM.
2. INSPECT INJECTOR RESISTANCE
(a) Remove the throttle body.
(See page MF−28)
(b) Disconnect the injector connectors.
(c) Using an ohmmeter, measure the resistance between the
terminals.
Resistance:
12 − 16 Ω at 20°C (68°F)
If the resistance is not as specified, replace the injector.
(d) Reconnect the injector connectors.
(e) Reinstall the throttle body.
(See page MF−30)

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− MFI (3RZ−FE)INJECTOR
MF−17
1996 TOYOTA T100 (RM449U)
COMPONENTS

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MF−18
− MFI (3RZ−FE)INJECTOR
1996 TOYOTA T100 (RM449U)
REMOVAL
1. DRAIN ENGINE COOLANT
2. REMOVE AIR CLEANER CAP, MAF METER AND RES-
ONATOR
(a) Disconnect the MAF meter connector, IAT sensor con-
nector and wire clamp.
(b) Loosen the air cleaner hose clamp.
(c) Loosen the 4 clips, and remove the air cleaner cap, MAF
meter and resonator.
3. M/T:
DISCONNECT ACCELERATOR CABLE FROM
THROTTLE BODY
4. A/T:
DISCONNECT THROTTLE AND ACCELERATOR
CABLES FROM THROTTLE BODY
5. REMOVE INTAKE AIR CONNECTOR
(a) Disconnect the 2 air hoses.
(b) Remove the 2 bolts, hose clamp and intake air connector.
6. REMOVE NO. 1 AND NO. 2 PCV HOSES
7. DISCONNECT HIGH−TENSION CORDS FROM SPARK
PLUGS
NOTICE:
Pulling on or bending the cords may damage the conductor
inside.
Disconnect the distributor connector.
8. REMOVE THROTTLE BODY (See page MF−28)
9. REMOVE DELIVERY PIPE AND INJECTORS

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P21648
Z14631
SST
(Hose)
SST
(Union)
Union
Bolt
Gasket
P15780
SST
(Union)
Fuel Return Hose Fuel Pressure
Regulator
SST
(Hose)
B02507
− MFI (3RZ−FE)INJECTOR
MF−19
1996 TOYOTA T100 (RM449U)
INSPECTION
1. INSPECT INJECTOR INJECTION
CAUTION:
Keep injector clean of sparks during the test.
(a) Connect SST (union and hose) to the fuel filter outlet with
2 gaskets and the union bolt.
SST 09268−41046 (90405−09015)
Torque: 29 N·m (300 kgf·cm, 22 ft·lbf)
(b) Remove the fuel pressure regulator.
(c) Install the O−ring to the fuel inlet of pressure regulator.
(d) Connect SST (hose) to the fuel inlet of the pressure regu-
lator with SST (union) and the 2 bolts.
SST 09268−41046 (09268−41091)
(e) Connect the fuel return hose to the fuel outlet of the pres-
sure regulator.
(f) Install the grommet and O−ring to the injector.
(g) Connect SST (union and hose) to the injector, and hold
the injector and union with SST (clamp).
SST 09268−41046
(h) Put the injector into a graduated cylinder.
HINT:
Install a suitable vinyl hose onto the injector to prevent gasoline
from splashing out.
(i) Connect the TOYOTA hand−held tester to the DLC3.
(See page MF−5)

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B02509
MF−20
− MFI (3RZ−FE)INJECTOR
1996 TOYOTA T100 (RM449U)
(j) 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
Volume:
69 − 88 cm
3 (4.2 − 5.3 cu in.) per 15 seconds
Difference between each injector:
5 cm
3 (0.3 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 3 minutes
(b) Turn the ignition switch to LOCK.
(c) Disconnect the negative (−) terminal cable from battery.
(d) Remove SST and TOYOTA hand−held tester.
SST 09268−41046
(e) Reinstall the fuel pressure regulator to the delivery pipe.