Page 967 of 2062

Downloaded from www.Manualslib.com manuals search engine P15006
Plug
P15007
New Gasket
New
Gasket
FI1654
SST
Fulcrum Length
30 cm
P15750
Grommet
New O−Ring
Delivery PipeCORRECT
WRONG
P15128
Delivery Pipe
Injector
InsulatorO−Ring
Grommet
− MFI (3RZ−FE)MFI SYSTEM
MF−3
955 Author: Date:
1996 TOYOTA T100 (RM449U)
7. FUEL SYSTEM
(a) When disconnecting the high pressure fuel line, a large
amount of gasoline will spill out, so observe these proce-
dures:
(1) Put a container under the connection.
(2) Slowly loosen the connection.
(3) Disconnect the connection.
(4) Plug the connection with a rubber plug.
(b) When connecting the flare nut or union bolt on the high
pressure pipe union, observe these procedures:
(1) (Union Bolt Type)
Always use a new gasket.
(2) (Union Bolt Type)
Tighten the union bolt by hand.
(3) (Union Bolt Type)
Tighten the union bolt to the specified torque.
Torque: 29 N·m (300 kgf·cm, 22 ft·lbf)
(4) (Flare Nut Type)
Apply a light coat of engine oil to the flare and tight-
en the flare nut by hand.
(5) (Flare Nut Type)
Using SST, tighten the flare nut to the specified
torque.
SST 09631−22020
Torque: 30 N·m (310 kgf·cm, 22 ft·lbf)
HINT:
Use a torque wrench with a fulcrum length of 30 cm (11.81 in.).
(c) Observe these precautions when removing and installing
the injectors.
(1) Never reuse the O−ring.
(2) When placing a new O−ring on the injector, take
care not to damage it in any way.
(3) Coat a new O−ring with spindle oil or gasoline be-
fore installing−never use engine, gear or brake oil.
(d) Install the injector to the delivery pipe and cylinder head
as shown in the illustration.
Page 970 of 2062

Downloaded from www.Manualslib.com manuals search engine P24762
FI7231
TOYOTA Hand−Held Tester
DLC3
MF−6
− MFI (3RZ−FE)FUEL PUMP
958 Author: Date:
1996 TOYOTA T100 (RM449U)
(d) Install the fuel inlet pipe and SST (pressure gauge) to the
delivery pipe with 3 gaskets and SST (union bolt).
SST 09268−45012
Torque: 29 N·m (300 kgf·cm, 22 ft·lbf)
(e) Wipe off any splattered gasoline.
(f) Connect the TOYOTA hand−held tester to the DLC3.
(g) Turn the ignition switch ON and TOYOTA hand−held tes-
ter main switch ON.
NOTICE:
Do not start the engine.
(h) Select the active test mode on the TOYOTA hand−held
tester.
(i) Please refer to the TOYOTA hand−held tester operator’s
manual for further details.
(j) If you have no TOYOTA hand−held tester, connect the
positive (+) and negative (−) leads from the battery to the
fuel pump connector.
(See page MF−10)
(k) Reconnect the negative (−) terminal cable to the battery.
(l) Turn the ignition switch ON.
(m) Measure the fuel pressure.
Fuel pressure:
265 − 304 kPa (2.7 − 3.1 kgf/cm
2, 38 − 44 psi)
If pressure is high, replace the fuel pressure regulator.
If pressure is low, check these parts:
Fuel hoses and connections
Fuel pump
Fuel filter
Fuel pressure regulator
Injectors
(n) Remove the TOYOTA hand−held tester.
(o) Start the engine.
(p) Disconnect the vacuum sensing hose from the fuel pres-
sure regulator, and plug the hose end.
(q) Measure the fuel pressure at idle.
Fuel pressure:
265 − 304 kPa (2.7 − 3.1 kgf/cm
2, 38 − 44 psi)
(r) Reconnect the vacuum sensing hose to the fuel pressure
regulator.
(s) Measure the fuel pressure at idle.
Fuel pressure:
206 − 255 kPa (2.1 − 2.6 kgf/cm
2, 31 − 37 psi)
If pressure is not as specified, check the vacuum sensing hose
and fuel pressure regulator.
(t) Stop the engine.
Page 971 of 2062
Downloaded from www.Manualslib.com manuals search engine P24763
− MFI (3RZ−FE)FUEL PUMP
MF−7
959 Author: Date:
1996 TOYOTA T100 (RM449U)
(u) Check that the fuel pressure remains as specified for 5
minutes after the engine has stopped.
Fuel pressure:
147 kPa (1.5 kgf/cm
2, 21 psi) or more
If pressure is not as specified, check the fuel pump, pressure
regulator and/or injector.
(v) After checking fuel pressure, disconnect the negative (−)
terminal cable from the battery and carefully remove SST
to prevent gasoline from splashing.
SST 09268−45012
(w) Reconnect the fuel inlet pipe to the delivery pipe with 2
new gaskets and the union bolt.
Torque: 29 N·m (300 kgf·cm, 22 ft·lbf)
(x) Reconnect the negative (−) terminal cable to the battery.
(y) Check for fuel leakage.
Page 973 of 2062
Downloaded from www.Manualslib.com manuals search engine SF0AI−02
B02579
− MFI (3RZ−FE)FUEL PUMP
MF−9
1996 TOYOTA T100 (RM449U)
REMOVAL
CAUTION:
Do not smoke or work near an open flame when working on
the fuel pump.
1. REMOVE FUEL TANK
(See page MF−23)
2. REMOVE FUEL PUMP BRACKET ASSEMBLY FROM
FUEL TANK
(a) Disconnect the fuel pump connector from the clamp.
(b) Remove the 7 bolts.
Torque: 3.9 N·m ( 40 kgf·cm, 35 in.·lbf)
(c) Pull out the pump bracket assembly.
(d) Remove the gasket from the pump bracket.
HINT:
At the time assembly please refer to the following items.
Install the fuel pump bracket with a new gasket.
Page 978 of 2062
Downloaded from www.Manualslib.com manuals search engine SF0AN−03
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.
Page 983 of 2062

Downloaded from www.Manualslib.com manuals search engine SF0AS−03
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)
Page 985 of 2062

Downloaded from www.Manualslib.com manuals search engine P14758
New
GrommetNew
O−Ring
SF0AT−03
P14756
Upward
Turn
Push
P14757
P24768
− MFI (3RZ−FE)INJECTOR
MF−21
1996 TOYOTA T100 (RM449U)
INSTALLATION
1. INSTALL INJECTORS TO DELIVERY PIPE
(a) Install a new grommet to the injector.
(b) Apply a light coat of gasoline to a new O−ring and install
it to the injector.
(c) While turning the injector left and right, install it to the de-
livery pipe. Install the 4 injectors.
(d) Position the injector connector upward.
2. INSTALL INJECTORS AND DELIVERY PIPE
(a) Place the 4 new insulators and in position on the spacers.
(b) Place the 4 injectors together with the delivery pipe in
position on the cylinder head.
(c) Temporarily install the 2 bolts holding the delivery pipe to
the cylinder head.
(d) 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.
(e) Position the injector connector upward.
(f) Tighten the 2 bolts holding the delivery pipe to the cylinder
head.
Torque: 21 N·m (210 kgf·cm, 15 ft·lbf)
3. INSTALL THROTTLE BODY (See page MF−30)
4. REINSTALL HIGH−TENSION CORDS TO SPARK
PLUGS
5. INSTALL NO.1 AND NO.2 PCV HOSES
6. INSTALL AIR INTAKE CONNECTOR
7. M/T:
CONNECT ACCELERATOR CABLE TO THROTTLE
BODY
8. A/T:
CONNECT THROTTLE AND ACCELERATOR CABLES
TO THROTTLE BODY
Page 987 of 2062
Downloaded from www.Manualslib.com manuals search engine SF0AU−02
P21793Non−reusable part
39 (400, 29)
1.5 (15, 13 in.·lbf)3.9 (40, 35 in.·lbf)
N·m (kgf·cm, ft·lbf)
3.5 (35, 31 in.·lbf)
: Specified torqueNo.1 Fuel Tank Band
− MFI (3RZ−FE)FUEL TANK AND LINE
MF−23
975 Author: Date:
1996 TOYOTA T100 (RM449U)
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.