2001 NISSAN X-TRAIL check engine

EM-132
[YD22DDTi]
EXHAUST MANIFOLD AND TURBOCHARGER
TROUBLE DIAGNOSIS OF TURBOCHARGER
Preliminary check:
●Check that the engine oil level is between MIN and MAX of the dipstick. (When the engine oil amount is
more than MAX, the engine oil flows into the inlet duct through the blow-by gas passage, and the turbo-
charger is misjudged failure.)
●Ask the customer if he/she always runs the vehicle in idle engine speed to cool the engine oil down after
driving.
●Replace the turbocharger assembly when any malfunction is found after unit inspections specified in the
table below.
●If no malfunction is found after the unit inspections, judge that the turbocharger body has no failure. Check
the other parts again.
A: Large possibility
B: Medium possibility
C: Small possibilityInspection item Inspection resultSymptom
(when each inspection item meets each inspection result)
Engine oil
leakageSmoke NoiseInsufficient power/
acceleration failure
Turbine wheelEngine oil leaks C A C C
Carbon is accumulated C A B B
Friction with housing C B A B
Blades are bent or broken — — A A
Compressor wheelInside the air inlet is seriously con-
taminated by engine oil.BB— —
Friction with housing C B A B
Blades are bent or broken — — A A
After checking both turbine and
compressor, inspect rotor shaft
end play.There is resistance when the rotor
shaft is rotated by your fingertips.—CC B
The rotor shaft sometimes does not
rotate by your fingertips.——— A
There is too much play in the bear-
ing.CCB C
Oil return portCarbon or sludge is accumulated in
the waste oil hole.CAC C

OIL PAN AND OIL STRAINER
EM-137
[YD22DDTi]
C
D
E
F
G
H
I
J
K
L
MA
EM
b. Apply a continuous bead of liquid gasket to mating surface of
lower oil pan.
Use Genuine Liquid Gasket or equivalent.
●Be sure liquid gasket is 3.5 to 4.5 mm (0.138 to 0.177 in)
wide.
●Attaching should be done within 5 minutes after coating.
8. Install oil pan drain plug.
●Refer to illustration of components parts for installation direc-
tion of washer.
9. Install in the reverse order of removal after this step.
●Pour engine oil or start engine at least 30 minutes after
oil pan is installed.
INSPECTION AFTER INSTALLATION
●Check engine oil level. Refer to LU-18, "ENGINE OIL" .
●Check for leakage of engine oil when engine is warmed.
SEM159F
SBIA0164E
SBIA0161E

EM-140
[YD22DDTi]
VACUUM PUMP
MODELS PRODUCED SINCE APRIL 2001
INSPECTION BEFORE REMOVAL
1. Disconnect vacuum hose, and connect a vacuum gauge via 3-way connector.
●Disconnect point where vacuum from vacuum pump can be measured directly and install 3-way con-
nector.
2. Start engine and measure generated vacuum at idle speed.
●If out of standard, check for air suction in vacuum route, and measure again.
●If still outside of standard, replace vacuum pump.
REMOVAL
1. Drain engine coolant. Refer to CO-29, "Changing Engine Coolant" .
2. Remove air duct and air cleaner case. Refer to EM-120, "
Removal and Installation" .
3. Remove charge air cooler and bracket. Refer to EM-122, "
Removal and Installation" .
4. Disconnect harness connector from fuel injector.
5. Remove injection tube. Refer to EM-144, "
Removal and Installation" .
6. Remove fuel injector oil seal.
7. Remove rocker cover. Refer to EM-156, "
Removal and Installation" .
8. Remove spill tube. Refer to EM-144, "
Removal and Installation" .
9. Remove nozzle support from NO.2 cylinder and fuel injector. Refer to EM-144, "
Removal and Installation"
.
10. Remove air inlet pipes. Refer to EM-127, "
Removal and Installation" .
11. Remove exhaust manifold cover.
12. Disconnect electronic EGR volume control valve water hose and harness.
13. Disconnect heater hose.
14. Remove EGR cooler.
SBIA0325E
Standard:
– 86.6 to – 101.3 kPa (– 866 to – 1,013 mbar, – 650 to – 760 mmHg, – 25.59 to – 29.92 inHg)

FUEL SUPPLY PUMP
EM-153
[YD22DDTi]
C
D
E
F
G
H
I
J
K
L
MA
EM
5. Before the fuel supply pump is installed, check that the notch of
its flange and the 6 mm (0.24 in) dia. hole on the body are
aligned.
6. Insert the fuel supply pump to the mounting position from the
rear side of the engine, and install the tightening bolts with seal
washer.
CAUTION:
Be careful not to drop the seal washer into the engine.
7. Using the extension bar (SST) and the TORX socket, tighten the
mounting bolts of the fuel supply pump.
8. Remove the sprocket holder (SST).
9. Using the TORX wrench (SST), turn the pump shaft gradually to
adjust the position of the flange. Then, insert the positioning
stopper pin (SST) to the 6 mm (0.24 in) dia. hole of the fuel sup-
ply pump sprocket through the pump flange and the pump body.
10. Remove the TORX wrench (SST)
11. Using the hexagon wrench [face to face: 6 mm (0.24 in), long-
type] (SST), tighten the sprocket mounting bolt.
●When the washer of the fuel supply pump sprocket is
removed, install it with the marking “F” (front) facing the front
of the engine.
12. Pull out the positioning stopper pin (SST).
SBIA0222E
PBIC0908E
SBIA0220E
SBIA0208E
PBIC0945E

ROCKER COVER
EM-157
[YD22DDTi]
C
D
E
F
G
H
I
J
K
L
MA
EM
6. Remove rocker cover.
●Loosen holding bolts in the reverse order of that shown in the
figure and remove.
INSTALLATION
1. Apply 3.0 mm (0.118 in) dia. of Genuine Liquid Gasket or equiv-
alent (Refer to EM-111, "
Precautions For Liquid Gasket" .) on
locations shown in the figure.
2. Tighten holding bolts in the numerical order shown in the figure.
●Re-tighten to the same torque in the same order as above.
3. Install nozzle oil seal.
●Insert it straight until flange fully contacts cylinder head.
4. Install remaining parts in reverse order removal.
5. Before starting engine, bleed air from fuel piping. Refer to FL-16,
"Air Bleeding" .
INSPECTION AFTER INSTALLATION
Start engine and increase engine speed to check for fuel leak.
SBIA0175E
JEM248G
SBIA0175E

CAMSHAFT
EM-159
[YD22DDTi]
C
D
E
F
G
H
I
J
K
L
MA
EM
8. Set the No. 1 cylinder at TDC on its compression stroke.
9. Remove the camshaft sprockets.
●Loosen the camshaft sprockets installation bolt by fixing the
hexagonal portion of the camshaft.
10. Remove the camshaft.
●Place distinguishing marks on the right and left sides with
paint.
●Loosen and remove the installation bolt in reverse order
shown in the figure.
11. Remove the adjusting shim and valve lifter.
●Remove by taking notice of the installation position, and place
outside engine in order to prevent confusion.
INSPECTION AFTER REMOVAL
Visual Check of Camshaft
●Check the camshaft for one sided wear or scratches.
●Replace the camshaft if there are abnormalities.
Camshaft Runout
●Prepare V-block on a flat surface and secure camshaft journals
No. 1 and No. 5.
●Set the dial gauge vertically on journal No. 3.
●Rotate camshaft in one direction by hand, then read needle
movement on dial indicator. (Total indicator reading)
Height of Cam Nose
Measure by using a micrometer.
JEM159G
JEM160G
Limit : 0.02 mm (0.0008 in)
JEM161G
Standard:
Intake : 39.505 - 39.695 mm (1.5553 - 1.5628 in
Exhaust : 39.905 - 40.095 mm (1.5711 - 1.5785 in)
SEM549A

CAMSHAFT
EM-163
[YD22DDTi]
C
D
E
F
G
H
I
J
K
L
MA
EM
Va l v e C l e a r a n c eEBS00LRS
INSPECTION
●When 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 misadjustment of
the valve clearance, inspect as follows.
●Inspect and adjust when the engine is cool (at normal tempera-
ture).
●Be 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 to CO-29, "
Changing Engine Coolant" .
2. Remove charge air cooler. Refer to EM-122, "
Removal and Installation" .
3. Remove air duct and air inlet pipe. Refer to EM-120, "
Removal and Installation" .
4. Remove rocker cover. Refer to EM-156, "
Removal and Installation" .
5. Remove vacuum pump. Refer to EM-139, "
Removal and Installation" .
6. Remove injection tube and fuel injector. Refer to EM-144, "
Removal and Installation" .
7. Remove secondary timing chain. Refer to EM-167, "
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.
●Turn 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.
●The 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. 1
cylinder is in the
TDCXXX X
SBIA0180E

PRIMARY TIMING CHAIN
EM-177
[YD22DDTi]
C
D
E
F
G
H
I
J
K
L
MA
EM
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 equivalent
on locations shown in the figure. Refer to E M - 111 , "
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
PBIC1255E