Page 2145 of 2898
Removal and InstallationNJEM0006
YEM008
1. Oil pressure switch
2. EGR valve*
3. EGR tube*
4. Air relief plug
5. Intake manifold6. Intake manifold upper support
7. Intake manifold rear supports
8. Oil filter
9. Thermostat
10. Water pump11. Water pump pulley
12. EGR solenoid valve*
13. EGR guide tube*
14. EGR gas temperature sensor*
*: If so equipped
OUTER COMPONENT PARTSQG
Removal and Installation
EM-11
Page 2146 of 2898
YEM009
1. Throttle position sensor
2. IACV-AAC valve
3. Throttle body
4. Injector
5. Injector tube6. Pressure regulator
7. Intake manifold
8. Canister purge control valve
9. Throttle opener*10. One way valve*
11. Vacuum tank*
12. Swirl control solenoid valve*
*: If so equipped
OUTER COMPONENT PARTSQG
Removal and Installation (Cont'd)
EM-12
Page 2147 of 2898
YEM010
1. Throttle position sensor
2. IACV-AAC valve
3. Throttle body4. Injector
5. Injector tube
6. Pressure regulator7. Intake manifold
8. Canister purge control valve
9. Throttle opener
(If so equipped)
OUTER COMPONENT PARTSQG
Removal and Installation (Cont'd)
EM-13
Page 2148 of 2898
YEM011
1. Crankshaft pulley
2. Engine coolant temperature
3. Gasket
4. Exhaust manifold
5. Exhaust manifold cover6. Thermal transmitter
7. Water drain plug
8. Heated oxygen sensor 1 (front)
9. Three way catalyst10. Converter cap
11. Converter cover
12. Ignition coil
13. Spark plug
OUTER COMPONENT PARTSQG
Removal and Installation (Cont'd)
EM-14
Page 2149 of 2898

NJEM0007
1. Warm up engine.
2. Turn ignition switch OFF.
3. Release fuel pressure.
Refer to EC-40, ªReleasing Fuel Pressureº.
4. Remove ignition coils.
5. Remove spark plugs.
+Clean area around plug with compressed air before removing
the spark plug.
SEM973E
AEM308
6. Attach a compression tester to No. 1 cylinder.
7. Depress accelerator pedal fully to keep throttle valve wide
open.
8. Crank engine and record highest gauge indication.
9. Repeat the measurement on each cylinder as shown above.
+Always use a fully-charged battery to obtain specified
engine speed.
Compression pressure: kPa (bar, kg/cm
2, psi)/rpm
Except for QG15DE
Standard
1,324 (13.24, 13.5, 192)/350
Minimum
1,128 (11.28, 11.5, 164)/350
Maximum allowable difference between cylinders
98 (0.98, 1.0, 14)/350
QG15DE
Standard
1,372 (13.720, 13.99, 198.9)/350
Minimum
1,176 (11.759, 11.99, 170.5)/350
Maximum allowable difference between cylinders
98 (0.98, 1.0, 14)/350
10. If cylinder compression in one or more cylinders is low, pour a
small amount of engine oil into the cylinder through the spark
plug hole and retest compression.
+If adding oil improves cylinder compression, piston rings
may be worn or damaged. If so, replace piston rings after
checking piston.
+If pressure stays low, a valve may be sticking or seating
improperly. Inspect and repair valve and valve seat. Refer
to SDS, EM-71. If valve or valve seat is damaged
excessively, replace them.
+If compression in any two adjacent cylinders is low and if add-
ing oil does not improve compression, there is leakage past the
gasket surface. If so, replace cylinder head gasket.
11. Reinstall spark plugs, ignition coils and fuel pump fuse.
12. Perform ªSelf-diagnosis Procedureº referring to EC-70, ªHow
to Erase DTCº if any DTC appears.
MEASUREMENT OF COMPRESSION PRESSUREQG
EM-15
Page 2150 of 2898
CheckingNJEM0042
SEM100G
1. Inspect for cracks, fraying, wear or oil adhesion. If necessary,
replace with a new one.
+When replacing belt, make sure the new belt has the same
number of ribs as the old one.
2. Inspect drive belt deflections by pushing on the belt midway
between pulleys.
3. Turn crankshaft two revolutions and recheck drive belt deflec-
tion.
+Inspect drive belt deflection when engine is cold.
+Adjust if belt deflections exceed the limit.
DRIVE BELTSQG
Checking
EM-16
Page 2151 of 2898
Belt deflection:
Unit: mm (in)
Applied engineUsed belt deflection
Deflection
of new belt
LimitDeflection
after
adjustment
AlternatorWith air
conditioner
compressorQG15´18DE 8.1 (0.319)5.3 - 5.7
(0.209 -
0.224)4.5 - 5.0
(0.177 -
0.197)
Without air
conditioner
compressorQG15´18DE10.2
(0.402)6.5 - 7.0
(0.256 -
0.276)5.5 - 6.1
(0.217 -
0.240)
Power steering oil
pumpSedan with
QG15DE8.5 (0.335)5.2 - 5.8
(0.205 -
0.228)4.6 - 5.2
(0.181 -
0.205)
Except for
Sedan with
QG15DE7.1 (0.280)4.4 - 4.9
(0.173 -
0.193)3.9 - 4.4
(0.154 -
0.173)
Applied pushing force 98 N (10 kg, 22 lb)
Inspect drive belt deflections when engine is cold.
DRIVE BELTSQG
Checking (Cont'd)
EM-17
Page 2152 of 2898
SMA373C
Cleaning and ChangingNJEM0043VISCOUS PAPER TYPENJEM0043S01The viscous paper type filter does not need cleaning between
renewals.
SMA384C
DRY PAPER TYPENJEM0043S02Clean or replace element more often under dusty driving con-
ditions.
AIR CLEANERQG
Cleaning and Changing
EM-18