2003 NISSAN X-TRAIL check engine

EM-154
[YD22DDTi]
CAMSHAFT
Valve Clearance
EBS00BOJ
INSPECTION
lWhen the camshaft or parts in connection with valves are
removed or replaced, and a malfunction has occurred (poor
starting, idling, or other malfunction) due to the mis adjustment
of the valve clearance, inspect as follows.
lInspect and adjust when the engine is cool (at normal tempera-
ture).
lBe careful of the intake and exhaust valve arrangement. The
valve arrangement is different from that in a normal engine.
NOTE:
The camshafts have, alternately, either an intake valve or an
exhaust valve.(Refer to illustration)
1. Drain engine coolant. Refer toCO-30, "
Changing Engine Coolant".
2. Remove charge air cooler. Refer toEM-114, "
Removal and Installation".
3. Remove air duct and air inlet pipe. Refer toEM-112, "
Removal and Installation".
4. Remove rocker cover. Refer toEM-147, "
Removal and Installation".
5. Remove vacuum pump. Refer toEM-131, "
Removal and Installation".
6. Remove injection tube and fuel injector. Refer toEM-135, "
Removal and Installation".
7. Remove secondary timing chain. Refer toEM-158, "
Removal and Installation"
Check valve clearance while engine is cold and not running.
8. Set the No. 1 piston to TDC on its compression stroke.
lTurn crankshaft pulley clockwise so that the knock pin on
camshaft LH faces straight above. (No position indicator, etc.
is provided on the crankshaft pulley.)
9. Put an alignment mark with paint, etc. on the crankshaft pulley
and on the oil pump as an angle indicator.
10. While referring to the figure, measure the valve clearance
marked in the table below.
lThe injection order is 1-3-4-2.
SBIA0178E
SBIA0179E
JEM177G
Measuring pointNo. 1 No. 2 No. 3 No. 4
INT EXH INT EXH INT EXH INT EXH
When the No. 4
cylinder is in the
TDCXXX X
SBIA0180E

EM-168
[YD22DDTi]
PRIMARY TIMING CHAIN
INSPECTION AFTER REMOVAL
Timing Chain
Check for cracks and excessive wear at roller links. Replace
chain if necessary.
INSTALLATION
1. Install rear chain case.
a. Apply a continuous bead of Genuine Liquid Gasket or eqivalent
on locations shown in the figure. Refer toEM-103, "
Precautions
for Liquid Gasket".
A: Apply bead so that it does not protrude into the oil passage.
B, C: Minimize overlapping area of bead, by starting and ending
at areas of bead as shown in the figure. Apply so that the portion
marked * comes at an external location but cannot be viewed
externally after engine assembly.
D: Leave the start and end areas of the bead slightly protruding
from the case surface.
SEM984C
JEM139G
SBIA0212E

EM-170
[YD22DDTi]
PRIMARY TIMING CHAIN
6. Install primary timing chain with fuel supply pump sprocket.
lWhen installing, match the alignment marks on sprockets with
color coded alignment marks (colored links) on the chain.
lInstall fuel supply pump sprocket washer with the surface
marked “F” (front mark) facing the front of the engine.
7. Install timing chain onto power steering pump sprocket and
through chain guide.
8. Use the positioning stopper pin (SST) to hold the fuel supply
pump sprocket and install the bolt.
lUsing a TORX wrench (SST), turn the pump shaft little by little
to adjust the position of the pump flange. Insert positioning
stopper pin (SST) into the hole 6 mm (0.24 in) in diameter on
the fuel supply pump sprocket so that the stopper pin goes
through the pump flange to the pump body. While the stopper
pinisinplace,installthebolt.
9. Install timing chain slack guide.
10. Install chain tensioner.
lPush the plunger of the chain tensioner. While keeping
plunger pressed down with a push pin, etc., install the chain
tensioner.
lAfter installation, pull out the push pin holding the plunger.
lCheck again that the alignment marks on the sprockets
and the colored alignment marks on timing chain are
aligned.
11. Install front oil seal to oil pump.
lUsing a suitable drift [62 mm (2.44 in) dia.], force fit the seal
until it hits the bottom.
lDo not touch lips of oil seal. Make sure seal surfaces are
free of foreign materials.
JEM136G
SBIA0208E
SBIA0209E
JEM134G
JEM142G

CYLINDER HEAD
EM-173
[YD22DDTi]
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CYLINDER HEADPFP:11041
On-Vehicle ServiceEBS00BPL
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 toEC-672,
"Basic Inspection".
lDo 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 the following parts.
lCharge air cooler (Refer toEM-114, "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.
lAmong marks on fuse box, [ENG CONT 3 (20A)] is for fuel
supply pump fuse.
6. Remove glow plugs from all the cylinders. Refer toEM-130,
"Removal and Installation".
CAUTION:
lBefore removal, clean the surrounding area to prevent
entry of any foreign materials into the engine.
lCarefully remove glow plugs to prevent any damage or
breakage.
lHandle 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.
lAlways use a fully-charged battery to obtain specified engine
speed.
Unit:kPa(bar,kg/cm2, psi)/rpm
lWhen engine rpm is out of the specified range, check the specific gravity of battery liquid. Measure
again under corrected conditions.
lIf 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.
lIf 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 oil, piston ring may be worn or damaged.
Check piston ring for malfunction. If any, replace piston ring.
–If compression pressure is still low after applying oil, valve may be malfunctioning. Check valve for mal-
function. If contact malfunction is found, replace valve or valve seat.
lIf compression pressure in adjacent two cylinders is low after applying oil, pressure may be leaking
from gasket. In this case, replace cylinder head gasket.
SBIA0192E
:18-21N·m(1.8-2.2kg-m,13-15ft-lb)
Standard MinimumDifference limit between
cylinders
2,893 (28.9, 29.5, 419)/
2002,452 (24.52, 25.0, 356)/
200490 (4.90, 5.0, 71)/200
SEM112G

CYLINDER HEAD
EM-177
[YD22DDTi]
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*: Measured with head bolts tightened
2. Apply a continuous bead of Genuine Liquid Gasket or equivalent
on the surface shown in the figure.
A: Apply bead so that it does not protrude into oil passage. Refer
toEM-103, "
Precautions for Liquid Gasket".
B: Miniimize the overlapping area of the bead, with start and end
areas of bead as shown in the figure.
Apply so that the portion marked * comes at an external loca-
tion but cannot be viewed externally after engine is assembled.
3. Install cylinder head assembly.
lTighten bolts in numerical order as shown in the figure
according to the following procedure:
a. Apply engine oil to bolt threads and seat surfaces.
b. Tighten bolts to 29 to 38 N·m (2.9 to 3.9 kg-m, 21 to 28 ft-lb).
c. Tighten 180°to 185°[target: 180°] (angular tightening).
d. Loosen completely to 0 N·m (0 kg-m, 0 in-lb) in the reverse order
of that shown in the figure.
e. Tighten bolts to 35 to 44 N·m (3.5 to 4.5 kg-m, 26 to 32 ft-lb).
f. Tighten 90°to 95°[target: 90°] (angular tightening)
g. Tighten another 90°to 95°[target: 90°] (angular tightening).
lWhen an angle wrench is not used, paint an alignment
mark on the head of cylinder head bolt and cylinder head
surface before tightening. Check the angle with a protrac-
tor.
4. Install glow plug.
lTo avoid damage, glow plugs should be removed only
when required.
lHandle with care to avoid applying shock. When dropped
from approx. 100 mm (3.94 in) or higher, always replace
with a new one.
lBefore installing, remove carbon depositing on mounting hole of glow plug with a reamer.
5. Install engine coolant temperature sensor and thermal transmitter.
Less than 0.255 - 0.280 (0.0100 - 0.0110) 0.925 (0.0364) 2 No
Less than 0.280 - 0.305 (0.0110 - 0.0120) 0.950 (0.0374) 3 No
Less than 0.305 - 0.330 (0.0120 - 0.0130) 0.975 (0.0384) 1 Yes
Less than 0.330 - 0.355 (0.0130 - 0.0140) 1.000 (0.0394) 2 Yes
More than 0.355 (0.0140) 1.025 (0.0404) 3 Yes
JEM167G
JEM149G
JEM166G

EM-178
[YD22DDTi]
CYLINDER HEAD
Disassembly and Assembly
EBS00BPN
CAUTION:
Apply new engine oil to parts marked in illustration before installation.
DISASSEMBLY
1. Remove adjusting shims and valve lifters.
lCheck the installation positions, and keep them to avoid being
confused.
2. Remove valve.
lUsing valve spring compressor, compress valve spring. Using
magnetic hand, remove valve collets.
3. Remove valve spring retainers and valve springs.
4. Remove valves as pressing valve stems toward combustion
chamber.
lBefore removing the valve, check the valve guide clearance.
Refer toEM-180, "
Valve Guide Clearance".
lCheck installation positions, and keep them to avoid being
confused.
NOTE:
Refertothefigureforintakeandexhaustvalvepositions.
Intake and exhaust valve driving cams are provided alter-
nately for each camshaft.
SBIA0194E
SBIA0195E
SBIA0196E

CYLINDER HEAD
EM-179
[YD22DDTi]
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5. Remove valve oil seals using valve oil seal puller.
6. Remove valve spring seats.
7. Before removing valve spring seats, perform valve seat contact
check. Refer toEM-181, "
Va l v e S e a t C o n ta ct".
8. Before removing valve guides, perform valve guide clearance
check. Refer toEM-180, "
Valve Guide Clearance".
ASEMBLY
1. Install valve guides. Refer toEM-180, "Valve Guide Clearance".
2. Install valve seats. Refer toEM-181, "
Valve Seat Replacement".
3. Using valve oil seal drift, install valve oil seals referring to the
dimension shown in the figure.
lDifferent parts are used for valve location, Identify by the rub-
ber color.
4. Install valve spring seats.
5. Install valves.
lInstall the valves with bigger outer diameter to intake valve
side.
lNote that valve layout here is different from that of conventional engine.
6. Install valve spring.
lWhen installing valve spring, make sure that a smaller pitch
side (identification paint-applied side) faces the cylinder head.
7. Install valve spring retainers.
8. Using valve spring compressor, compress valve springs.
Then install valve collets using magnetic hand.
lAfter installing valve collets, tap the stem end using a plastic
hammer, and check the installation status.
9. Install valve lifters and adjusting shims to the same positions as
before.
INSPECTION AFTER DISASSEMBLY
Cylinder Head Distortion
Using straightedge and feeler gauge, check the bottom of the cylin-
der head for distortion.
JEM153G
For intake : Black
For exhaust : Brown
JEM165G
Identification color : Yellow
FEM080
Limit : 0.04 mm (0.0016 in)
SEM496G

EM-186
[YD22DDTi]
ENGINE ASSEMBLY
lUse a manual lift table caddy or equivalently rigid tool such as a
jack or trestle. Securely support bottom of engine and transaxle,
and simultaneously adjust hoist tension.
CAUTION:
Put a piece of wood or something similar as the supporting
surface, secure a completely stable condition.
21. Remove RH engine mounting insulator.
22. Pull LH engine mounting through-bolt out.
23. Remove mounting bolts at front end of center member.
24. Remove front suspension member mounting bolts and nuts.
25. Remove engine, transaxle and transfer assembly with suspen-
sion member from vehicle downward by carefully operating sup-
porting tools.
CAUTION:
lDuring the operation, make sure that no part interferes
with body side.
lBefore and during this lifting, always check if any har-
nesses are left connected.
lDuring the removal operation, always be careful to pre-
vent vehicle from falling off the lift due to changes in the center of gravity.
lIf necessary, support vehicle by setting a jack or equivalent tool at the rear.
26. Remove power steering pump with piping connected from engine. Move it aside on suspension member.
27. Remove front engine mounting and rear engine mounting through-bolts to remove suspension member.
28. Remove starter motor.
29. Separate engine and transaxle.
INSTALLATION
Install in the reverse order of removal.
lDo not allow oil to get on mounting insulator. Be careful not to damage mounting insulator.
lWhen installation directions are specified, install parts according to the direction marks on them referring
to components illustration.
lMake sure that each mounting insulator is seated properly, and tighten mounting bolts and nuts.
INSPECTION AFTER INSTALLATION
lBefore starting engine check the levels of coolant, lubrications and working oils. If less than required
quantity, fill to the specified level.
lBefore starting engine, bleed air from fuel piping. Refer toFL-16, "Air Bleeding".
lRun engine to check for unusual noise and vibration.
lWarm up engine thoroughly to make sure there is no leakage of coolant, lubricants, working oil, fuel and
exhaust gas.
KBIA0256E
KBIA0257E
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