Page 271 of 557

2. Ground
1. Throttle body
2. ISC actuator
coupler
3. TP sensor
coupler
4. Fuel injector
coupler
5. EFE heater
coupler
ENGINE MECHANICAL (G10, 1-CAM 6-VALVES ENGINE) 6A-7
INSTALLATION
1) Install throttle body to intake manifold. (Refer to Section 6E.)
2) Install intake manifold gasket to cylinder head. Use a new gas-
ket.
3) Install intake manifold (1) with throttle body to cylinder head.
Install clamps (3) as shown in figure, and tighten bolts and
nuts to specification.
Tightening Torque
(a): 23 N
.m (2.3 kg-m, 17.0 lb-ft)
4) Connect breather hose to PCV valve.
5) Connect vacuum hoses.
6) Connect coolant hoses.
7) Connect fuel return and feed hoses to throttle body.
8) Connect electric lead wire.
9) Connect accelerator cable to throttle body.
10) Install air cleaner assembly to throttle body.
11) Check to ensure that all removed parts are back in place.
Reinstall any necessary parts which have not been reinstalled.
12) Refill cooling system.
13) Connect negative cable at battery.
14) Upon completion of installation, start engine and check for fuel
leaks and engine coolant leaks.
After warming up engine, adjust accelerator cable play to spec-
ification according to description in Section 6E.
Page 272 of 557
1. Exhaust manifold
2. Gasket
3. Cover
4. Heated oxygen sensor
5. Pipe seal
6. Exhaust pipe
7. WU-TWC (if equipped)
8. Exhaust pipe bolt : Tightening Torque
: Do not reuse
6A-8 ENGINE MECHANICAL (G10, 1-CAM 6-VALVES ENGINE)
EXHAUST MANIFOLD
WARNING:
To avoid danger of being burned, do not service exhaust
system while it is still hot.
Service should be performed after system cools down.
REMOVAL
1) Disconnect negative cable at battery.
2) Disconnect heated oxygen sensor coupler.
Release its wire from clamps.
3) Disconnect exhaust pipe (1) from exhaust manifold (or WU-
TWC (2)).
4) Remove WU-TWC stiffener (3). (if equipped)
5) Remove exhaust manifold cover (2). (for vehicle with WU-TWC)
6) Remove exhaust manifold (1) with WU-TWC (if equipped) and
its gasket from cylinder head.
Page 273 of 557
2. WU-TWC
ENGINE MECHANICAL (G10, 1-CAM 6-VALVES ENGINE) 6A-9
INSTALLATION
1) Install manifold gasket to cylinder head.
Before installing gasket, check it for deterioration or damage,
and replace as necessary.
2) Install exhaust manifold (1).
Tighten manifold bolts and nuts to specified torque.
Tightening Torque
(a): 23 N
.m (2.3 kg-m, 17.0 lb-ft)
3) Install exhaust manifold cover (2).
4) Install pipe seal, and then connect exhaust pipe (1).
Before installing pipe seal, check it for deterioration or damage,
and replace as necessary.
Tighten pipe bolts to specified torque.
Tightening Torque
(c): 43 N
.m (4.3 kg-m, 31.5 lb-ft)
5) Install WU-TWC stiffener (3). (if equipped)
6) Connect heated oxygen sensor coupler.
7) Clamp its wire securely.
8) Connect negative cable at battery.
9) Check exhaust system for exhaust gas leakage.
Page 288 of 557

6A-24 ENGINE MECHANICAL (G10, 1-CAM 6-VALVES ENGINE)
UNIT REPAIR OVERHAUL
ENGINE ASSEMBLY
REMOVAL
1) Relieve fuel pressure according to procedure described in
“FUEL PRESSURE RELIEF PROCEDURE” of Section 6.
2) Remove engine hood after disconnecting front window washer
hose.
3) Disconnect battery cables at battery and remove battery and
its tray.
4) Drain cooling system.
5) Remove air cleaner assembly.
6) Remove radiator with cooling fan. Refer to Section 6B for re-
moval.
7) Disconnect the following electric wire harness.
High-tension cord from ignition coil
Distributor
EGR valve
ECT sensor
ISC actuator
Ground wire harness from intake manifold
TP sensor
Fuel injector
Oil pressure gauge
A / C compressor pressure switch (if equipped)
Heated oxygen sensor
Generator
Starter
Back-up light switch (For M / T model)
Battery negative cable from transmission
Shift switch of A / T (For A / T model)
Direct clutch and 2nd brake solenoids of A / T (For A / T model)
Vehicle speed sensor on A / T (For A / T model)
And release above wire harness from clamps.
8) Disconnect the following vacuum hose.
Brake booster hose from intake manifold.
Canister purge hose from EVAP canister purge valve.
Pressure sensor hose from intake manifold.
9) Disconnect fuel return hose and fuel feed hose from fuel feed
and return pipes.
10) Disconnect heater inlet and outlet hoses.
Page 307 of 557
6A1-12 ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE)
AIR CLEANER OUTLET HOSE
REMOVAL
1) Disconnect negative cable at battery.
2) Disconnect resonator after loosening its clamp.
3) Disconnect breather hose from air cleaner outlet hose.
4) Disconnect IAT sensor wire at coupler.
5) Remove bolt and then air cleaner outlet hose after loosening its
clamps.
INSTALLATION
Reverse removal procedure for installation, noting the following.
Clamp each hose securely.
Page 309 of 557
1. Intake manifold
2. Throttle body
3. Gasket
4. EGR valve
5. Fuel delivery pipe
6. Fuel injector7. Fuel pressure regulator
8. EVAP canister purge valve
9. MAP sensor
10. O-ring
11. Gasket
12. Cushion : Tightening Torque
: Do not reuse
1
2
6A1-14 ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE)
THROTTLE BODY AND INTAKE MANIFOLD
REMOVAL
1) Relieve fuel pressure according to procedure described in Sec-
tion 6.
2) Disconnect negative cable at battery.
3) Drain cooling system.
WARNING:
To help avoid danger of being burned, do not remove
drain plug (2) and radiator cap while engine and radiator
(1) are still hot. Scalding fluid and steam can be blown out
under pressure if plug and cap are taken off too soon.
4) Disconnect IAT sensor at coupler.
5) Remove air cleaner outlet hose (2) with resonator.
6) Disconnect accelerator cable (1) from throttle body.
Page 310 of 557
ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE) 6A1-15
7) Disconnect the following electric lead wires and release clamp:
Ground wires (5) from intake manifold
TP sensor (3)
IAC valve (4)
Fuel injectors
EVAP canister purge valve (2)
MAP sensor (6)
EGR valve (1)
8) Disconnect the following hoses:
Brake booster hose (1) from intake manifold
Canister purge hose (3) from EVAP canister purge valve
Engine cooling water (coolant) hose (2) from IAC valve
PCV hose (4)
Breather hose from cylinder head
9) Disconnect fuel feed hose (2) from pipe (1), and disconnect fuel
return hose (3) from fuel pressure regulator.
Page 312 of 557
: Tightening Torque
: Do not reuse
1. Exhaust manifold
2. Gasket
3. Cover
4. Heated oxygen sensor
7. Gasket
8. Exhaust No.1 pipe.
21
ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE) 6A1-17
EXHAUST MANIFOLD
WARNING:
To avoid danger of being burned, do not service exhaust
system while it is still hot.
Service should be performed after system cools down.
REMOVAL
1) Disconnect negative cable at battery.
2) Disconnect heated oxygen sensor coupler.
Release its wire from clamps.
3) Disconnect exhaust No.1 pipe (1) from WU-TWC.
4) Remove WU-TWC stiffener (2) (if equipped).
5) Remove exhaust manifold (1) and its gasket from cylinder head.