2001 NISSAN X-TRAIL ignition

EM-38
[QR]
TIMING CHAIN
REMOVAL
1. Remove the parts listed below.
●Engine hood
●Engine undercover
●PCV hose
●Ignition coil; Refer to EM-29, "IGNITION COIL" .
●Rocker cover; Refer to EM-35, "ROCKER COVER" .
●Engine coolant reservoir tank
●Drive belt; Refer to EM-12, "REMOVAL" .
●Alternator
●Drive belt auto-tensioner; Refer to EM-13, "REMOVAL" .
●Exhaust front tube; Refer to EX-2, "Removal and Installation" .
2. Remove A/C compressor from engine. Temporarily secure A/C compressor to vehicle side with a rope to
avoid putting a load on them.
3. Remove bracket mounting bolts for fixing A/C piping on right strut housing and exhaust manifold cover.
Doing so simplifies moving.
4. Move power steering pump with piping connected, and secure it to vehicle side temporarily.
5. Pull power steering reservoir tank out of brackets to move power steering piping.
CAUTION:
To avoid power steering fluid leakage, temporarily fix reservoir tank vertically.
6. Suspend engine with a hoist, and support the engine posture.
For installation of engine slingers, refer to EM-69, "
ENGINE ASSEMBLY" .
7. Remove RH engine mount insulator.
8. Remove center member and rear engine mounting bracket.
9. Drain engine oil.
10. Remove oil pan upper and lower, and oil strainer. Refer to EM-26, "
OIL PAN AND OIL STRAINER" .
11. Remove intake valve timing control cover.
a. Loosen bolts in reverse order shown in the figure.
b. Remove the cover using Tool (Seal cutter).
CAUTION:
Be careful not to damage mounting surface.
12. Pull chain guide between camshaft sprockets out through front
cover.
13. Set No. 1 cylinder at TDC on its compression stroke with the fol-
lowing procedure.
a. Rotate crankshaft pulley clockwise and align mating marks to
timid indicator on front cover.
KBIA0085E
KBIA0190E

EM-46
[QR]
CAMSHAFT
CAMSHAFT
PFP:13001
Removal and InstallationEBS00LS2
CAUTION:
Apply new engine oil to parts marked in illustration before installation.
REMOVAL
The following procedure describes removing and installing camshaft without removing front cover. If the front
cover is removed or installed, removal of No. 1 camshaft bracket is easier before step 8. Installation is easier
after step 3. Regarding removal and installation of front cover, refer to EM-37, "
TIMING CHAIN" .
1. Release fuel pressure. Refer to EC-775, "
FUEL PRESSURE RELEASE" [QR20DE (WITH EURO-OBD)],
EC-1139, "
FUEL PRESSURE RELEASE" [QR20DE (WITHOUT EURO-OBD)], EC-42, "FUEL PRES-
SURE RELEASE" [QR25DE (WITH EURO-OBD)] or EC-452, "FUEL PRESSURE RELEASE" [QR25DE
(WITHOUT EURO-OBD)].
2. Remove parts listed below.
●Ignition coil; Refer to EM-29, "IGNITION COIL" .
●Rocker cover; Refer to EM-35, "ROCKER COVER" .
3. Remove power steering reservoir tank.
KBIA0244E
1. Camshaft bracket 2. Washer 3. Front cover
4. Chain guide 5. Chain tensioner 6. O-ring
7. Spring 8. Chain tensioner plunger 9.Intake valve timing control solenoid
valve
10. Intake valve timing control cover 11. Camshaft sprocket (EXH) 12. Camshaft sprocket (INT)
13. Valve lifter 14. Camshaft (EXH) 15. Camshaft (INT)
16. Camshaft position sensor (PHASE)

CYLINDER HEAD
EM-59
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CYLINDER HEADPFP:11041
On-Vehicle ServiceEBS00KNP
CHECKING COMPRESSION PRESSURE
1. Warm up engine thoroughly. Then, stop it.
2. Release fuel pressure. Refer to EC-775, "
FUEL PRESSURE RELEASE" [QR20DE (WITH EURO-OBD)],
EC-1139, "
FUEL PRESSURE RELEASE" [QR20DE (WITHOUT EURO-OBD)], EC-42, "FUEL PRES-
SURE RELEASE" [QR25DE (WITH EURO-OBD)] or EC-452, "FUEL PRESSURE RELEASE" [QR25DE
(WITHOUT EURO-OBD)].
3. Remove ignition coil and spark plug from each cylinder. Refer to EM-29, "
IGNITION COIL" and EM-30,
"SPARK PLUG" .
4. Connect engine tachometer (not required in use of CONSULT-II).
5. Disconnect fuel injector sub-harness to avoid fuel injection dur-
ing measurement.
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
Unit: kPa (bar, kg/cm2 , psi) /rpm
CAUTION:
Always use a fully changed battery to obtain specified engine speed.
KBIA0269E
KBIA0130E
SEM387C
Engine type Standard Minimum Deference limit between cylinders
QR20DE 1,190 (11.9, 12.1, 173) / 250 990 (9.9, 10.1, 144) / 250
100 (1.0, 1.0, 14) / 250
QR25DE 1,250 (12.5, 12.8, 181.3) / 250 1,060 (10.6, 10.8, 153.7) / 250

EM-60
[QR]
CYLINDER HEAD
●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
combustion chamber (Valve, valve seat, piston, piston ring, cylinder bore, cylinder head, cylinder head
gasket). 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
malfunctioning. 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.
8. Install spark plug, ignition coil and harness connectors.
Removal and InstallationEBS00KNQ
REMOVAL
1. Release fuel pressure. Refer to EC-775, "FUEL PRESSURE RELEASE" [QR20DE (WITH EURO-OBD)],
EC-1139, "
FUEL PRESSURE RELEASE" [QR20DE (WITHOUT EURO-OBD)], EC-42, "FUEL PRES-
SURE RELEASE" [QR25DE (WITH EURO-OBD)] or EC-452, "FUEL PRESSURE RELEASE" [QR25DE
(WITHOUT EURO-OBD)].
2. Drain engine coolant and engine oil.
3. Remove the following components and related parts.
●Engine hood and engine undercover.
●Air cleaner case and air duct assembly; Refer to EM-14, "AIR CLEANER AND AIR DUCT" .
●Ignition coils; Refer to EM-29, "IGNITION COIL" .
●Rocker cover; Refer to EM-35, "ROCKER COVER" .
●Engine coolant reservoir tank
●Drive belt; Refer to EM-12, "REMOVAL" .
●Alternator
●Drive belt auto-tensioner; Refer to EM-13, "REMOVAL" .
●Exhaust front tube; Refer to EX-2, "Removal and Installation" .
●Exhaust manifold; Refer to EM-24, "EXHAUST MANIFOLD AND THREE WAY CATALYST" .
KBIA0250E
1. Cylinder head assembly 2. Cylinder head gasket 3. Cylinder head bolt

CYLINDER BLOCK
EM-75
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●A commercial engine stand can be used.
NOTE:
This example is an engine stand for holding at transaxle
mounting side with the flywheel or drive plate removed.
3. Drain engine oil and engine coolant from inside of engine.
4. Remove the following components and associated parts.
●Exhaust manifold and three way catalyst assembly; Refer to
EM-24, "
EXHAUST MANIFOLD AND THREE WAY CATA-
LYST" .
●Intake manifold collector; Refer to EM-16, "INTAKE MANI-
FOLD" .
●Intake manifold and fuel tube assembly; Refer to EM-16, "INTAKE MANIFOLD" .
●Ignition coil; Refer to EM-29, "IGNITION COIL" .
●Rocker cover; Refer to EM-35, "ROCKER COVER" .
●Oil pan and oil strainer; Refer to EM-26, "OIL PAN AND OIL STRAINER" .
●Front cover, timing chain and balancer unit; Refer to EM-37, "TIMING CHAIN" .
●Camshaft; Refer to EM-46, "CAMSHAFT" .
●Cylinder head; Refer to EM-59, "CYLINDER HEAD" .
5. Remove knock sensor.
CAUTION:
Carefully handle the sensor avoiding shocks.
6. Remove crankshaft position sensor (POS).
CAUTION:
●Avoid impacts such as a dropping.
●Do not disassemble.
●Keep it away from metal particles.
●Do not place sensor close to magnetic materials.
7. Remove flywheel (M/T model) or drive plate (A/T model). Fix crankshaft with a stopper plate, and remove
mounting bolts.
Torx bit (size T55): Flywheel (M/T model)
Torx socket (size T55): Drive plate (A/T model)
CAUTION:
Be careful not to damage contact surface for the clutch disc
of the flywheel.
NOTE:
The flywheels, two block construction, allows movement in
response to transmission side pressure, or when twisted in its
rotational direction. Therefore, some amount of noise is normal.
PBIC0085E
SBIA0273E
KBIA0062E

EM-108
[QR]
SERVICE DATA AND SPECIFICATIONS (SDS)
Bearing Oil Clearance
Unit: mm (in)
Tightening TorqueEBS00KNY
Unit: N·m (kg-m, ft-lb)
Unit: N·m (kg-m, in-lb)*2
Connecting rod bearing oil clearanceStandard 0.028 - 0.045 (0.0011 - 0.0018)
Limit 0.10 (0.0039)
*1: Parts to be tightened in particular orders.
1)-: Order of tightening when tightening two or more times separately.
Auto-tensioner 19.6 - 23.5 (2.0 - 2.4, 15 - 17)
Mass air flow sensor
3.8 - 4.5 (0.39 - 0.46, 34 - 39) *
2
Resonator
3.8 - 4.5 (0.39 - 0.46, 34 - 39)*2
Air cleaner case lower
3.8 - 4.5 (0.39 - 0.46, 34 - 39)*2
*1 Intake manifold17.6 - 21.6 (1.8 - 2.2, 13 - 15)
Intake manifold collector 17.6 - 21.6 (1.8 - 2.2, 13 - 15)
Intake manifold support 17.6 - 21.6 (1.8 - 2.2, 13 - 15)
Electric throttle control actuator
7.2 - 9.6 (0.74 - 0.98, 64 - 84) *
2
EVAP canister purge volume control solenoid valve
4.3 - 5.8 (0.44 - 0.59, 38 - 51) *2
*1 Exhaust manifold 39.2 - 44.1 (4.0 - 4.5, 29 - 32)
Exhaust manifold cover
5.1 - 6.5 (0.52 - 0.66, 46 - 57) *
2
Heated oxygen sensor 40 - 50 (4.1 - 5.1, 30 - 36)
*1 Oil pan upper M6 bolt
8.1 - 9.5 (0.83 - 0.97, 72 - 84) *
2
M8 bolt 19.6 - 23.5 (2.0 - 2.4, 15 - 17)
Oil pan upper to transmission joint bolts 39.2 - 46.1 (4.0 - 4.7, 29 - 34)
*1 Oil pan lower
6.4 - 7.5 (0.65 - 0.76, 57 - 66) *
2
Oil pan drain plug29.4 - 39.2 (3.0 - 4.0, 22 - 28)
Rear plate cover
6.4 - 7.5 (0.65 - 0.76, 57 - 66) *
2
Oil strainer M6 bolt
8.1 - 9.5 (0.83 - 0.97, 72 - 84) *2
M8 bolt 19.6 - 23.5 (2.0 - 2.4, 15 - 17)
Oil level gauge guide 19.6 - 23.5 (2.0 - 2.4, 15 - 17)
Ignition coil
5.4 - 7.3 (0.55 - 0.75, 48 - 64) *
2
Spark plug19.6 - 29.4 (2.0 - 3.0, 15 - 21)
*1 Fuel tube1)
2)9.3 - 10.8 (0.95 - 1.1, 0.7 - 0.8) *
2
20.6 - 26.5 (2.1 - 2.7, 16 - 19)
*1 Rocker cover1)
2)0.98 - 2.9 (0.1 - 0.3, 9 - 25) *
2
7.4 - 9.3 (0.75 - 0.95, 66 - 82) *2
PCV valve
1.96 - 2.94 (0.20 - 0.30, 18 - 26) *2
Intake valve timing control solenoid valve
5.4 - 7.3 (0.55 - 0.75, 48 - 64) *2
*1 Intake valve timing control cover 11.8 - 13.7 (1.2 - 1.4, 9 - 10)
Camshaft position sensor (PHASE)
5.4 - 7.3 (0.55 - 0.75, 48 - 64) *
2
Camshaft sprocket (Intake and Exhaust) 127- 157 (13.0 - 16.0, 94 - 115)
Chain tensioner
6.4 - 7.5 (0.65 - 0.76, 57 - 66) *
2

EM-182
[YD22DDTi]
CYLINDER HEAD
CYLINDER HEAD
PFP:11041
On-Vehicle ServiceEBS00LRV
CHECKING COMPRESSION PRESSURE
1. Warm up engine thoroughly. Then, stop it.
2. Using CONSULT-II, make sure no error codes are indicated for self-diagnosis items. Refer to EC-1412,
"Basic Inspection" .
●Do not disconnect CONSULT-II until the end of this operation; it will be used to check engine rpm and
for error detection at the end of this operation.
3. Disconnect the negative battery terminal.
4. Remove charge air cooler. Refer to EM-122, "
Removal and Installation"
5. To prevent fuel from being injected during inspection, remove
fuel supply pump fuse [ENG CONT (20A)] from fuse box on the
left side of engine compartment.
●Among marks on fuse box, [ENG CONT 2 (20A)] is for fuel
supply pump fuse.
6. Remove glow plugs from all the cylinders. Refer to EM-138,
"Removal and Installation" .
CAUTION:
●Before removal, clean the surrounding area to prevent
entry of any foreign materials into the engine.
●Carefully remove glow plugs to prevent any damage or
breakage.
●Handle with care to avoid applying any shock to glow plugs.
7. Install adapter to installation holes of glow plugs and connect
compression gauge for diesel engine.
8. Connect battery negative terminal.
9. Set the ignition switch to “START” and crank. When gauge
pointer stabilizes, read compression pressure and engine rpm.
Repeat the above steps for each cylinder.
●Always use a fully-charged battery to obtain specified engine
speed.
Compression pressure
Unit: kPa (bar, kg/cm2 , psi)/rpm
●When engine rpm is out of the specified range, check the specific gravity of battery liquid. Measure
again under corrected conditions.
●If engine rpm exceeds the limit, check valve clearance and combustion chamber components (valves,
valve seats, cylinder head gaskets, piston rings, pistons, cylinder bores, cylinder block upper and lower
surfaces) and measure again.
●If compression pressure is low in some cylinders, apply engine oil from glow plug installation hole. Then
check pressure again.
–If compression pressure becomes normal after applying engine oil, piston ring may be worn or dam-
aged. Check piston ring for malfunction. If any, replace piston ring.
–If compression pressure is still low after applying engine oil, valve may be malfunctioning. Check valve
for malfunction. If contact malfunction is found, replace valve or valve seat.
●If compression pressure in adjacent two cylinders is low after applying engine oil, pressure may be
leaking from gasket. In this case, replace cylinder head gasket.
10. Complete this operation as follows:
PBIC0680E
: 18 - 21 N·m (1.8 - 2.2 kg-m, 13 - 15 ft-lb)
SEM112G
Standard Minimum Difference limit between cylinders
2,893 (28.9, 29.5, 419)/200 2,452 (24.52, 25.0, 356)/200 490 (4.90, 5.0, 71)/200

CYLINDER HEAD
EM-183
[YD22DDTi]
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a. Turn the ignition switch to “OFF”.
b. Disconnect battery negative terminal.
c. Install glow plug and install all the parts removed in step 4.
d. Install fuel supply pump fuse [ENG CONT (20A)].
e. Connect battery negative terminal.
f. Using CONSULT-II make sure no error code is indicated for items of self-diagnosis.
Removal and InstallationEBS00LRW
CAUTION:
Apply new engine oil to parts marked in illustration before installation.
REMOVAL
1. Drain engine coolant. Refer to CO-29, "Changing Engine Coolant" .
2. Remove the following parts:
●Charge air cooler (Refer to EM-122, "Removal and Installation" .)
●Rocker cover (Refer to EM-156, "Removal and Installation" .)
●Air cleaner and air duct (Refer to EM-120, "Removal and Installation" .)
●Vacuum pump (Refer to EM-139, "Removal and Installation" .)
●Injection tube, spill tube and fuel injector (Refer to EM-144, "Removal and Installation" .)
●Intake manifold (Refer to EM-123, "Removal and Installation" .)
●Exhaust manifold and Turbocharger (Refer to EM-127, "Removal and Installation" .)
●Secondary timing chain (Refer to EM-167, "Removal and Installation" .)
●Camshaft (Refer to EM-158, "Removal and Installation" .)
SBIA0193E
1. Glow plug 2. Cylinder head assembly 3. Cylinder head bolt
4. Thermal transmitter 5. Engine coolant temperature sensor 6. Gasket
7. Water outlet 8. Glow plate