Page 308 of 557

3
3
ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE) 6A1-13
CYLINDER HEAD COVER
REMOVAL
1) Disconnect negative cable at battery.
2) Disconnect breather hose (2) and PCV valve (3) from head cov-
er.
3) Disconnect ignition coil couplers (6).
4) Remove ignition coil assemblies (5) with high-tension cord (4).
5) Remove cylinder head cover (1) with cylinder head cover gasket
and O-rings.
INSTALLATION
1) Install O-rings (3) and cylinder head cover gasket (2) to cylinder
head cover (1).
NOTE:
Be sure to check each of these parts for deterioration or any
damage before installation and replace if found defective.
2) Install cylinder head cover to cylinder head and tighten cover
bolts to specified torque.
Tightening Torque
(a): 11 N
.m (1.1 kg-m, 8.0 lb-ft)
NOTE:
When installing cylinder head cover, use care so that cylin-
der head cover gasket or O-rings will not get out of place or
fall off.
3) Install ignition coil assemblies (5) with high-tension cord (4).
4) Connect ignition coil couplers (6).
5) Connect breather hose (2) and PCV valve (3) to head cover (1).
6) Connect negative cable at battery.
Page 311 of 557
1. Long bolt
2. Short bolt
6A1-16 ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE)
10) Remove intake manifold rear stiffener (1) and generator adjust
arm reinforcement (2) from intake manifold (3).
11) Remove intake manifold with throttle body from cylinder head,
and then its gasket.
INSTALLATION
Reverse removal procedure for installation noting the followings.
Use new intake manifold gasket.
When installing intake manifold, install clamps securely.
Tightening Torque
(a): 23 N
.m (2.3 kg-m, 17.0 lb-ft)
Adjust accelerator cable play, referring to Section 6E.
Check to ensure that all removed parts are back in place.
Reinstall any necessary parts which have not been reinstalled.
Refill cooling system referring to Section 6B.
Upon completion of installation, turn ignition switch ON but en-
gine OFF and check for fuel leaks.
Finally, start engine and check for engine coolant leaks.
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.
Page 313 of 557
(b)
(a)
6A1-18 ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE)
INSTALLATION
1) Install new gaskets to cylinder head.
2) Install exhaust manifold.
Tighten bolts and nuts to specified torque.
Tightening Torque
(a): 32 N
.m (3.2 kg-m, 23.5 lb-ft)
3) Install exhaust manifold cover(s) (1).
4) Connect oxygen sensor coupler (3) and clamp (2) its wire se-
curely.
5) Tighten exhaust No.1 pipe to manifold nuts and exhaust man-
ifold stiffener bolt.
Tightening Torque
(a): 50 N
.m (5.0 kg-m, 36.5 lb-ft)
(b): 50 N
.m (5.0 kg-m, 36.5 lb-ft)
6) Connect negative cable at battery.
7) Check exhaust system for exhaust gas leakage.
Page 336 of 557
: Do not reuse
1. Valve cotters
2. Valve spring retainer
3. Valve spring:
be sure to position
spring in place with its
bottom end (small-pitch
end) facing the bottom
(valve spring seat side).
4. Valve stem seal
5. Valve spring seat
6. Exhaust valve
7. Intake valve
8. Cylinder head bolt
9. Camshaft housing bolt10. Camshaft housing:
Apply sealant to mating surface of
No.1 and No.6 housings.
11. Valve guide
12. Oil venturi plug
13. Cylinder head gasket:
“TOP” mark provided on gasket comes to
crankshaft pulley side, facing up
(toward cylinder head side).
14. Dowel pin
: Tightening Torque
: Apply engine oil to sliding
: surfaces of each part.
3.5 N.m (0.35 kg-m)
ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE) 6A1-41
VALVES AND CYLINDER HEAD
REMOVAL
1) Relieve fuel pressure according to procedure described in Sec-
tion 6.
2) Disconnect negative cable at battery.
3) Drain cooling system.
4) Remove air cleaner outlet hose as previously outlined.
Page 343 of 557
6A1-48 ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE)
Flatness of gasketed surface:
Using a straightedge and thickness gauge, check surface at a to-
tal of 6 locations. If distortion limit, given below, is exceeded, cor-
rect gasketed surface with a surface plate and abrasive paper of
about #400 (Waterproof silicon carbide abrasive paper): place
paper on and over surface plate, and rub gasketed surface
against paper to grind off high spots. Should this fail to reduce
thickness gauge readings to within limit, replace cylinder head.
Leakage of combustion gases from this gasketed joint is often
due to warped gasketed surface: such leakage results in reduced
power output.
Limit of distortion: 0.05 mm (0.002 in.)
Distortion of manifold seating faces:
Check seating faces of cylinder head for manifolds, using a
straightedge and thickness gauge, in order to determine whether
these faces should be corrected or cylinder head replaced.
Limit of distortion: 0.10 mm (0.004 in.)
Page 347 of 557

A: Crankshaft pulley side
B: Flywheel side
A: Camshaft pulley side
B: CMP sensor case side
6A1-52 ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE)
9) Install rocker arms, washers, rocker arm shaft and camshaft as
previously outlined.
10) Install CMP sensor case, intake manifold and exhaust man-
ifold.
INSTALLATION
1) Remove oil gasket and oil on mating surfaces and install new
head gasket (1) as shown in figure, that is, “TOP” mark provided
on gasket comes to crankshaft pulley side, facing up (toward cyl-
inder head side).
2) Check to make sure that oil jet (venturi plug) is installed and if
it is, that it is not clogged.
When installing it, be sure to tighten to specified torque.
Tightening Torque
(a): 3.5 N
.m (0.35 kg-m, 2.5 lb-ft)
3) Apply engine oil to cylinder head bolts and tighten them gradual-
ly as follows.
a) Tighten all bolts to 35 N
.m (3.5 kg-m, 25.0 lb-ft) according to
numerical order in figure.
b) In the same manner as in a), tighten them to 55 N
.m
(5.5 kg-m, 40.0 lb-ft).
c) Loosen all bolts until tightening torque is reduced to 0 (zero)
in reverse order of tightening.
d) In the same manner as in a), tighten them to 35 N
.m
(3.5 kg-m, 25.0 lb-ft).
e) In the same manner as in a) again, tighten them to specified
torque.
Tightening Torque
(a): 68 N
.m (6.8 kg-m, 49.5 lb-ft)
Page 386 of 557

ENGINE COOLING 6B-9
WATER PUMP
1) Disconnect negative cable at battery.
2) Drain cooling system.
3) Remove timing belt and tensioner according to procedure de-
scribed in “TIMING BELT AND TENSIONER” of Section 6A or
6A1.
4) Remove water pump belt adjusting arm.
5) Remove water pump assembly (1).
INSPECTION
NOTE:
Do not disassemble water pump.
If any repair is required on pump, replace it as assembly.
Rotate water pump by hand to check for smooth operation.
If pump does not rotate smoothly or makes abnormal noise, replace
it.
INSTALLATION
1) Install new pump gasket to cylinder block.
2) Install water pump to cylinder block.
Tightening Torque
(a): 12 N
.m (1.2 kg-m, 9.0 lb-ft)
3) After installing water pump, install rubber seal (1) between water
pump and oil pump, and another between water pump and cylin-
der head.
4) Install timing belt tensioner, timing belt and timing belt outside
covers according to procedure described in “TIMING BELT AND
TENSIONER” of Section 6A or 6A1.
NOTE:
Special care must be used when installing belt tensioner
and timing belt.
Torque each bolt and nut to specification.
Before installing outside covers, check to make sure that
cover seal is fitted in groove of each cover properly.
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