2008 NISSAN TEANA Service Manual

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Page 1897 of 5121

NISSAN TEANA 2008 Service Manual EM-22
< ON-VEHICLE MAINTENANCE >
COMPRESSION PRESSURE
COMPRESSION PRESSURE
InspectionINFOID:0000000003802245
1. Warm up engine thoroughly. Then, stop it.
2. Release fuel pressure. Refer to EC-411, "
I

EM-22
< ON-VEHICLE MAINTENANCE >
COMPRESSION PRESSURE
COMPRESSION PRESSURE
InspectionINFOID:0000000003802245
1. Warm up engine thoroughly. Then, stop it.
2. Release fuel pressure. Refer to EC-411, "
Inspection".
3. Disconnect fuel pump fuse to avoid fuel injection during measurement. Refer to EC-20,
"ComponentPartsLocation".
4. Remove engine cover. Refer to EM-24, "
Exploded View".
5. Remove ignition coil and spark plug from each cylinder. Refer to EM-49, "
Exploded View".
6. Connect engine tachometer (not required in use of CONSULT-III).
7. Install compression gauge with an adapter (commercial service
tool) onto spark plug hole.
Use the adapter whose picking up end inserted to spark plug
hole is smaller than 20 mm (0.79 in) in diameter. Otherwise, it
may be caught by cylinder head during removal.
8. With accelerator pedal fully depressed, turn ignition switch to “START” for cranking. When the gauge
pointer stabilizes, read the compression pressure and the engine rpm. Perform these steps to check each
cylinder.
CAUTION:
Always use a fully charged battery to obtain the specified engine speed.
If the engine speed is out of the specified range, check battery liquid for proper gravity. Check the
engine speed again with normal battery gravity.
If compression pressure is below minimum value, check valve clearances and parts associated with
combustion chamber (valve, valve seat, piston, piston ring, cylinder bore, cylinder head, cylinder head
gasket). After the checking, measure compression pressure again.
If some cylinder has low compression pressure, pour small amount of engine oil into the spark plug hole
of the cylinder to recheck it for compression.
- If the added engine oil improves the compression, piston rings may be worn out or damaged. Check pis-
ton rings and replace if necessary.
- If the compression pressure remains at low level despite the addition of engine oil, valves may be mal-
functioning. Check valves for damage. Replace valve or valve seat accordingly.
If two adjacent cylinders have respectively low compression pressure and their compression remains
low even after the addition of engine oil, cylinder head gaskets are leaking. In such a case, replace cyl-
inder head gaskets.
9. After inspection is completed, install removed parts.
PBIC0900E
a: φ20 mm (0.79 in)
JPBIA0171ZZ
Compression pressure : Refer to EM-135, "GeneralSpecification".

Page 1898 of 5121

NISSAN TEANA 2008 Service Manual COMPRESSION PRESSURE
EM-23
< ON-VEHICLE MAINTENANCE >
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10. Start the engine, and check that the engine runs smoothly.
11. Perform trouble diagnosis. If DTC appears, eras

Page 1899 of 5121

NISSAN TEANA 2008 Service Manual EM-24
< ON-VEHICLE REPAIR >
ENGINE COVER
ON-VEHICLE REPAIR
ENGINE COVER
Exploded ViewINFOID:0000000003802246
Removal and InstallationINFOID:0000000003802247
REMOVAL
1. Remove air duct (inlet). Refer t

Page 1900 of 5121

NISSAN TEANA 2008 Service Manual DRIVE BELT AUTO TENSIONER AND IDLER PULLEY
EM-25
< ON-VEHICLE REPAIR >
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DRIVE BELT AUTO TENSIONER AND IDLER PULLEY
Exploded ViewINFOID:0000000003802248
Removal and Insta

Page 1901 of 5121

NISSAN TEANA 2008 Service Manual EM-26
< ON-VEHICLE REPAIR >
AIR CLEANER AND AIR DUCT
AIR CLEANER AND AIR DUCT
Exploded ViewINFOID:0000000003802250
Removal and InstallationINFOID:0000000003802251
REMOVAL
1. Remove air duct (inlet).
2

Page 1902 of 5121

NISSAN TEANA 2008 Service Manual AIR CLEANER AND AIR DUCT
EM-27
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Never touch mass air flow sensor.
INSTALLATION
Note the following, and install in the reverse order of removal.

Page 1903 of 5121

NISSAN TEANA 2008 Service Manual EM-28
< ON-VEHICLE REPAIR >
INTAKE MANIFOLD COLLECTOR
INTAKE MANIFOLD COLLECTOR
Exploded ViewINFOID:0000000003802253
VQ25DE
VQ35DE
1. Vacuum hose 2. Clamp 3. Clamp
4. PCV hose 5. Intake manifold colle

Page 1904 of 5121

NISSAN TEANA 2008 Service Manual INTAKE MANIFOLD COLLECTOR
EM-29
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Removal and InstallationINFOID:0000000003802254
REMOVAL
WARNING:
To avoid the danger of being scalded, never drain

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