2003 NISSAN ALMERA N16 Electronic Repair Manual

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Page 129 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual TIMING CHAIN
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30. Remove timing chain, timing chain slack guide and tension guide.
31. Remove crankshaft sprocket.
INSPECTION AFTER REMOVAL
Timing Chain
Check timi

Page 130 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual EM-52
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TIMING CHAIN
2. Install front oil seal to front cover.
●Install it so that identification letters on oil seal will face toward
front side of the engine.
●Using an oil seal drift (commer

Page 131 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual TIMING CHAIN
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h. Install front cover with mounting bolts temporarily so that front
cover will not move.
i. Press fit dowel pin into cylinder block through

Page 132 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual EM-54
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OIL SEAL
OIL SEAL
PFP:00100
Removal and Installation of Valve Oil SealEBS00LQE
REMOVAL
1. Remove camshaft. Refer to EM-32, "CAMSHAFT" .
2. Remove adjusting shim (if so equipped) and

Page 133 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual OIL SEAL
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Removal and Installation of Front Oil SealEBS00LQF
REMOVAL
1. Remove the following parts:
●Undercover (with splash cover)
●Drive belt; Refer to EM-11,

Page 134 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual EM-56
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OIL SEAL
●Press rear oil seal into rear oil seal retainer so that is
does not project from the end.
2. Perform steps in the reverse order of removal for the following operation

Page 135 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual CYLINDER HEAD
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CYLINDER HEADPFP:11041
On-Vehicle ServiceEBS00LQH
CHECKING COMPRESSION PRESSURE
1. Warm up engine thoroughly. Then, stop it.
2. Release fuel pressu

CYLINDER HEAD
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CYLINDER HEADPFP:11041
On-Vehicle ServiceEBS00LQH
CHECKING COMPRESSION PRESSURE
1. Warm up engine thoroughly. Then, stop it.
2. Release fuel pressure. Refer to EC-34, "
FUEL PRESSURE RELEASE" (WITH EURO-OBD), EC-427,
"FUEL PRESSURE RELEASE" (WITHOUT EURO-OBD).
3. Remove ignition coil and spark plug from each cylinder.
Refer to IGNITION COIL EM-24, "
Removal and Installation" and SPARK PLUG EM-25, "Removal and
Installation" .
4. Connect engine tachometer (not required in use of CONSULT-II).
5. Disconnect fuel injector harness connector so that no fuel is injected.
6. Install compression tester with adapter onto spark plug hole.
●Use compression gauge 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.
7. With accelerator pedal fully depressed, turn ignition switch to
“START” for cranking. When the gauge pointer stabilizes, read
the compression pressure and engine rpm. Perform these steps
to check each cylinder.
Compression pressure
[kPa (bar, kg/cm2 , psi)/rpm]
CAUTION:
Always use a fully changed battery to obtain specified engine speed.
●If the engine speed is out of specified range, check battery liquid for proper gravity. Check engine speed
again with normal battery gravity.
●If compression pressure is below minimum value, check valve clearances and parts associated with com-
bustion chamber (Valve, valve seat, piston, piston ring, cylinder bore, cylinder head, cylinder head gas-
ket). After the checking, measure compression pressure again.
●If some cylinders have low compression pressure, pour small amount of engine oil into the spark plug hole
of the cylinder to re-check it for compression.
–If the added engine oil improves the compression, the piston rings may be worn out or damaged. Check
the piston rings and replace if necessary.
–If the compression pressure remains at low level despite the addition of engine oil, the valves may be mal-
functioning. Check the valves for damage. Replace the 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, the gaskets are leaking. In such a case, replace the cylinder head
gaskets.
KBIA1402E
Engine type QG15DE QG18DE
Standard1,372 (13.72, 13.99,
198.9)1,324 (13.24, 13.5, 192)
Limit 1,176 (11.76, 12.0, 170.5) 1,128 (11.28, 11.5, 164)
Difference limit among
cylinders98 (0.98, 1.0, 14) 98 (0.98, 1.0, 14)SEM387C

Page 136 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual EM-58
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CYLINDER HEAD
8. Install spark plug, ignition coil and harness connectors.
Removal and InstallationEBS00LQI
REMOVAL
1. Release fuel pressure. Refer to EC-34, "FUEL PRESSURE RELEA

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