1986 TOYOTA SUPRA torque

(g) Reconnect the negative (±) terminal cable to the battery.
(h) Turn the ignition switch ON.
(i) Measure the fuel pressure.
Fuel pressure:
226±275 kPa (2.3±2.8 kgf/cm
2, 33±40 psi)
If pressure is high, replace the fuel pressure regulator.
If pressure is low, check the following parts:
wFuel hoses and connections
wFuel pump
wFuel filter
wFuel pressure regulator
(j) Remove the SST from the DLC1.
SST 09843±18020
(k) Start the engine.
(l) Disconnect the vacuum sensing hose from the fuel pressure
regulator, and plug the hose end.
(m) Measure the fuel pressure at idle.
Fuel pressure:
226±275 kPa (2.3±2.8 kgf/cm
2, 33±40 psi)
(n) Reconnect the vacuum sensing hose to the fuel pressure
regulator.
(o) Measure the fuel pressure at idle.
Fuel pressure:
167±216 kPa (1.7±2.2 kgf/cm
2, 24±31 psi)
If pressure is not as specified, check the vacuum sensing
hose and fuel pressure regulator.
(p) Stop the engine.
(q) 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 injectors.
(r) After checking fuel pressure, disconnect the negative (±)
terminal cable from the battery and carefully remove the SST
to prevent gasoline from splashing.
SST 09268±45012
(s) Reinstall the fuel inlet hose to the fuel filter with 2 new gaskets
and the union bolt.
Torque: 29 NVm (300 kgfVcm, 22 ftVlbf)
(t) Reconnect the negative (±) terminal cable to the battery.
(u) Check for fuel leaks.
(See item 5 in fuel system in precaution)
± ENGINESFI SYSTEM (2JZ±GTE)EG±265

(e) Temporarily install the retainer.
(f) Using SST, tighten the retainer until the arrow mark on
retainer is within the lines on the fuel tank.
SST 09808±14010
(g) Check that the arrow marks of the fuel pump bracket and fuel
tank are aligned.
(h) Install the retainer clamp.
(i) Connect the connector and hoses to the fuel pump bracket:
wFuel pump connector
wFuel outlet hose
Connect the outlet hose with 2 new gaskets and the union
bolt.
Torque: 29 NVm (300 kgfVcm, 22 ftVlbf)
wFuel return hose
wFuel breather hose
2. INSTALL SERVICE HOLE COVER
3. INSTALL SPARE WHEEL
4. INSTALL SPARE WHEEL COVER
5. INSTALL FLOOR CARPET
6. CHECK FOR FUEL LEAKS
(See item 5 in fuel system in precaution) EG±270
± ENGINESFI SYSTEM (2JZ±GTE)

FUEL PRESSURE REGULATOR
INSTALLATION
1. INSTALL FUEL PRESSURE REGULATOR
(a) Apply a light coat of gasoline to a new O±ring, and install it
to the pressure regulator.
(b) Attach the pressure regulator to the delivery pipe.
(c) Check that the pressure regulator rotates smoothly.
NOTICE: If it does not rotate smoothly, the O±ring may be
pinched, so remove the pressure regulator and do steps (b)
and (c) above again.
(d) Install the pressure regulator with the 2 bolts.
Torque: 8.8 NVm (90 kgfVcm, 78 in.Vlbf)
2. CONNECT FUEL RETURN PIPE TO FUEL PRESSURE
REGULATOR
Install the return pipe with 2 new gaskets and the union bolt.
Torque: 27 NVm (280 kgfVcm, 20 ftVlbf)
3. CONNECT VACUUM SENSING HOSE TO FUEL
PRESSURE REGULATOR
4. INSTALL THROTTLE BODY
(See throttle body installation)
5. CHECK FOR FUEL LEAKS
(See item 5 in fuel system in precaution) EG±272
± ENGINESFI SYSTEM (2JZ±GTE)

INJECTORS REMOVAL
Installation is in the reverse order of removal.
1. REMOVE ENGINE UNDER COVER
2. REMOVE THROTTLE BODY
(See throttle body removal)
3. REMOVE OIL DIPSTICK AND GUIDE FOR A/T
(a) Remove the bolt.
(b) Pull out the dipstick guide together with the dipstick.
INSTALLATION HINT: Apply soapy water to the O±ring, and
push in the dipstick guide.
(c) Remove the O±ring from the dipstick guide.
INSTALLATION HINT: Use a new O±ring.
4. REMOVE OIL DIPSTICK AND GUIDE FOR ENGINE
(a) Disconnect the fuel return hose from the clamp of the dipstick
guide.
(b) Remove the bolt.
(c) Pull out the dipstick guide together with the dipstick.
INSTALLATION HINT: Apply soapy water to the O±ring, and
push in the dipstick guide.
(d) Remove the O±ring from the dipstick guide.
INSTALLATION HINT: Use a new O±ring.
5. REMOVE AIR INTAKE CHAMBER STAY
Remove the bolt, nut and chamber stay.
Torque: 19 NVm (195 kgfVcm, 14 ftVlbf)
6. DISCONNECT CONTROL CABLE BRACKET FROM AIR
INTAKE CHAMBER
Remove the 2 bolts, and disconnect the cable bracket from
the air intake chamber.
Torque: 19 NVm (195 kgfVcm, 14 ftVlbf)
7. DISCONNECT CONNECTORS AND HOSES
(a) Disconnect these connectors:
(1) IAC valve connector
(2) Turbo pressure sensor connector
(3) VSV connector for fuel pressure control
(4) VSV connector for EGR
(b) Remove the bolt, and disconnect the engine wire protector
from the body.
± ENGINESFI SYSTEM (2JZ±GTE)EG±275

(c) Disconnect these hoses:
(1) Air hose from IAC valve
Disconnect the IAC valve pipe from the clamp on the cyl-
inder head cover, and disconnect the air hose from the
IAC valve.
(2) Air hose (from air intake chamber) from vacuum pipe on
IAC valve pipe
(3) Air hose for EGR from valve pipe
(4) PCV hose from PCV valve
(5) Vacuum sensing hose from fuel pressure regulator
(6) Water bypass hose (from IAC valve) from No.4 water by-
pass pipe
(7) EVAP hose (from air intake chamber) from vacuum pipe
on manifold stay
(8) EVAP hose (from vacuum pipe on No.4 water bypass
pipe) from No.2 vacuum pipe
(9) EVAP hose (from charcoal canister) from No.2 vacuum
pipe
(10) PS air hose from air intake chamber
(11) Brake booster vacuum hose from union on air intake
chamber
8. DISCONNECT EGR GAS TEMPERATURE SENSOR
CONNECTOR
(a) Disconnect the connector from the No.2 vacuum pipe.
(b) Disconnect the sensor connector from the wiring connector.
9. REMOVE EGR PIPE
(a) Remove the union bolt holding the EGR pipe to the EGR
valve.
Torque: 64 NVm (650 kgfVcm, 47 ftVlbf)
(b) Remove the 2 bolts, EGR pipe and gasket.
INSTALLATION HINT: Use a new gasket.
Torque: 27 NVm (270 kgfVcm, 20 ftVlbf)
10. REMOVE NO.4 WATER BYPASS PIPE
Remove the 2 bolts and water bypass pipe.
11. REMOVE MANIFOLD STAY
Remove the 2 bolts and manifold stay.
Torque: 39 NVm (400 kgfVcm, 29 ftVlbf)
EG±276± ENGINESFI SYSTEM (2JZ±GTE)

12. REMOVE AIR INTAKE CHAMBER ASSEMBLY
(a) Remove the bolt, and disconnect the ground cable from the
intake manifold.
(b) Remove the 2 bolts holding the engine wire protector to the
intake manifold.
(c) Disconnect the 2 clamps of the engine wire protector from the
brackets.
(d) Remove the 5 bolts, 2 nuts and engine wire bracket, and
disconnect the air intake chamber assembly from the intake
manifold.
INSTALLATION HINT: Uniformly tighten the bolts and nuts in
several passes.
Torque: 27 NVm (280 kgfVcm, 20 ftVlbf)
(e) Disconnect the water bypass hose from the IAC valve.
(f) Remove the gasket.
INSTALLATION HINT: Use a new gasket.
13. DISCONNECT WIRE CLAMPS AND CONNECTORS
Disconnect these connectors and clamps:
(1) 6 injectors connectors
INSTALLATION HINT: The No.1, No.3 and No.5 injector con-
nectors are dark gray, and the No.2, No.4 and No.6 injector
connectors are gray.
(2) 2 camshaft position sensor connectors
(3) 3 engine wire clamps from injector holders
14. DISCONNECT FUEL INLET PIPE FROM DELIVERY PIPE
Remove the union bolt and 2 gaskets, and disconnect the in-
let pipe from the delivery pipe.
INSTALLATION HINT: Use 2 new gaskets.
Torque: 41 NVm (420 kgfVcm, 30 ftVlbf)
CAUTION:
wPut a shop towel under the delivery pipe.
wSlowly loosen the union bolt.
± ENGINESFI SYSTEM (2JZ±GTE)EG±277

15. DISCONNECT FUEL RETURN PIPE FROM FUEL
PRESSURE REGULATOR
Remove the union bolt and 2 gaskets, and disconnect the
fuel pipe from the pressure regulator.
INSTALLATION HINT: Use 2 new gaskets.
Torque: 27 NVm (280 kgfVcm, 20 ftVlbf)
CAUTION:
wPut a shop towel under the pressure regulator.
wSlowly loosen the union bolt.
16. REMOVE DELIVERY PIPE AND INJECTORS
(a) Remove the 6 bolts and 3 injector holders.
Torque: 7.8 NVm (80 kgfVcm, 69 in.Vlbf)
(b) Remove the 6 insulators from the injectors.
INSTALLATION HINT: Use 6 new insulators.
(c) Re mo ve th e 2 bo lts, th e de live ry pip e an d 6 in je cto rs
assembly.
Torque: 21 NVm (210 kgfVcm, 15 ftVlbf)
(d) Remove the 2 spacers from the intake manifold. EG±278
± ENGINESFI SYSTEM (2JZ±GTE)

(e) Remove the 6 insulators from the delivery pipe.
INSTALLATION HINT: Use 6 new insulators.
INJECTORS INSPECTION
1. INSPECT INJECTOR INJECTION
CAUTION: Keep injector clear of sparks during the test.
(a) Install the insulator to each injector.
(b) Install the 3 injector holders with the 6 bolts.
Torque: 7.8 NVm (80 kgfVcm, 69 in.Vlbf)
± ENGINESFI SYSTEM (2JZ±GTE)EG±279