engine NISSAN X-TRAIL 2001 Service Owner's Guide

EM-22
[QR]
INTAKE MANIFOLD
3. Align center to insert quick connector straightly into fuel tube.
●Insert fuel tube into quick connector until the first spool on fuel
tubes is inserted completely and the second one is positioned
slightly below the quick connectors bottom end.
CAUTION:
●Hold A position in illustration when inserting fuel tube
into quick connector.
●Carefully align center to avoid inclined insertion to pre-
vent damage to O-ring inside quick connector.
●Insert until you hear a “click” sound and actually feel
the engagement.
●To avoid misidentification of engagement with a similar sound, be sure to perform the next
step.
4. Before clamping fuel hose with hose clamps, pull quick connector hard by hand holding A position. Make
sure it is completely engaged (connected) so that it does not come out from fuel tube.
NOTE:
Recommended pulling force is 50 N (5.1 kg, 11.2 lb).
5. Install quick connector cap on quick connector joint.
●Direct arrow mark on quick connector cap to upper side.
6. Install fuel hose to hose clamp.
Connecting Quick Connector of Fuel Hose (Vehicle side)
Install quick connector as follows.
1. Make sure no foreign substances are deposited in and around tube and quick connector and no damage
on them.
2. Align center to insert quick connector straightly into fuel tube.
●Insert fuel tube until a click is heard.
●Install quick connector cap on quick connector joint. Direct
arrow mark on quick connector cap to upper side.
3. Install fuel hose to hose clamp.
INSPECTION AFTER INSTALLATION
Make sure there is no fuel leakage at connections in the following steps.
1. Apply fuel pressure to fuel lines with turning ignition switch ON (with engine stopped). Then check for fuel
leaks at connections.
2. Start the engine and rev it up and check for fuel leaks at connections.
NOTE:
Use mirrors for checking on invisible points.
CAUTION:
Do not touch the engine immediately after stopped as engine becomes extremely hot.
KBIA0272E
KBIA0298E
PBIC0662E

EM-24
[QR]
EXHAUST MANIFOLD AND THREE WAY CATALYST
EXHAUST MANIFOLD AND THREE WAY CATALYST
PFP:14004
Removal and InstallationEBS00KND
REMOVAL
1. Remove heated oxygen sensors.
●Follow below steps to remove each heated oxygen sensor.
a. Remove engine undercover.
b. Disconnect harness connector of each heated oxygen sensor, and harness from bracket and middle
clamp.
c. Using heated oxygen sensor wrench, remove heated oxygen
sensors.
CAUTION:
●Be careful not to damage heated oxygen sensor.
●Discard any heated oxygen sensor which has been
dropped from a height of more than 0.5 m (19.7 in) onto a
hard surface such as a concrete floor; use a new one.
2. Remove exhaust manifold and three way catalyst assembly.
a. Remove exhaust manifold cover lower.
b. Remove exhaust front tube. Refer to EX-2, "
Removal and Instal-
lation" .
PBIC0279E
1.Exhaust manifold and three way cat-
alyst assembly2. Gasket 3. Exhaust manifold cover
4. Heated oxygen sensor 1 5. Heated oxygen sensor 2
KBIA0094E

EM-26
[QR]
OIL PAN AND OIL STRAINER
OIL PAN AND OIL STRAINER
P F P : 1111 0
Removal and InstallationEBS00KNE
REMOVAL
WARNING:
To avoid the danger of being scalded, never drain the engine oil when the engine is hot.
1. Remove engine undercover both side.
2. Drain engine oil. Refer to LU-8, "
Changing Engine Oil" .
3. Remove lower oil pan bolts, Loosen bolts in the reverse order of
that shown in the figure.
KBIA0095E
1. Oil level gauge guide 2. Oil pan upper 3. Cylinder block
4. Oil filter 5. Oil strainer 6. Drain plug
7. Oil pan lower 8. Rear plate cover
KBIA0096E

OIL PAN AND OIL STRAINER
EM-27
[QR]
C
D
E
F
G
H
I
J
K
L
MA
EM
4. Insert Tool (Seal cutter) between lower and upper oil pan slide
tool by tapping on the side of the tool with a hammer.
5. Remove lower oil pan.
6. Remove drive belts. Refer to EM-12, "
DRIVE BELTS" .
7. Remove A/C compressor with piping connected. And locate it
aside temporarily with ropes or equivalent not to disturb the fol-
lowing work
8. Remove front exhaust tube and its support. Refer to EX-2,
"EXHAUST SYSTEM" .
9. Set a suitable transmission jack under transaxle and hoist
engine with engine slinger.
10. Remove center member.
11. Remove rear plate cover, and four engine-to transaxle bolts.
12. Loosen bolts in reverse order of illustration to remove upper oil
pan.
●Disregard No. 1, 2 and 3 when loosening.
●Insert Tool (Seal cutter) between upper oil pan and cylinder
block. Slide tool by tapping on the side of the tool with a ham-
mer.
13. Remove oil strainer.
INSPECTION AFTER REMOVAL
Clean oil strainer if any object attached.
INSTALLATION
1. Install oil strainer.
2. Install upper oil pan in the order below.
SEM365EA
PBIC0257E
SBIA0233E
SEM365EA

EM-28
[QR]
OIL PAN AND OIL STRAINER
a. Apply liquid gasket thoroughly as in illustration.
Use Genuine Liquid Gasket or equivalent.
b. Install O-rings as front cover side.
c. Tighten bolts in numerical order as shown.
●No. 10, 11and 18 indicate double tightening of bolts No. 1, 2
and 3.
NOTE:
Refer to the below for locating bolts.
M6 × 20 mm (0.79 in): No. 18, 19
M8 × 25 mm (0.98 in): No. 1, 2, 3, 11
M8 x 45 mm (1.77 in): No. 4, 10, 13, 14, 15, 16
M8 x100 mm (3.97 in): No. 5, 6, 7, 8, 9
d. Tighten transmission joint bolts.
e. Install rear plate cover.
3. Install lower oil pan.
Use Genuine Liquid Gasket or equivalent.
●Tighten bolts in numerical order as shown.
4. Install oil pan drain plug.
●Refer to illustration of components of former page for installation direction of washer.
5. Install in the reverse order of removal after this step.
●Pour engine oil at least 30 minutes after oil pan is installed.
INSPECTION AFTER INSTALLATION
●Check engine oil level. Refer to LU-7, "ENGINE OIL" .
●Check for leakage of engine oil when engine is warmed.
SBIA0253E
SBIA0233E
SBIA0254E
KBIA0096E

EM-30
[QR]
SPARK PLUG
SPARK PLUG
PFP:22401
Removal and InstallationEBS00KNG
REMOVAL
1. Remove ignition coil. Refer to EM-29, "IGNITION COIL" .
2. Remove spark plug with suitable spark plug wrench.
CAUTION:
Do not drop or shock it.
INSPECTION AFTER REMOVAL
●Use standard type spark plug for normal condition.
●The hot type spark plug is suitable when fouling occurs with the standard type spark plug under conditions
such as.
–frequent engine starts.
–low ambient temperatures.
●The cold type spark plug is suitable when spark plug knock occurs with the standard type spark plug
under conditions such as.
–extended highway driving.
–frequent high engine revolution.
Check plug gap of each spark plug. Adjust or replace if necessary.
KBIA0237E
1. Ignition coil 2. Spark plug 3. Rocker cover
SEM294A
MakeNGK
Standard typeLFR5A-11
Hot typeLFR4A-11
Cold typeLFR6A-11
Spark plug gap: 1.0 - 1.1 mm (0.039 - 0.043 in)

EM-32
[QR]
FUEL INJECTOR AND FUEL TUBE
FUEL INJECTOR AND FUEL TUBE
PFP:16600
Removal and InstallationEBS00KNH
QR20DE
CAUTION:
●Apply new engine oil when installing the parts that specified to do so in the figure.
●Do not remove or disassembly parts unless instructed as shown in the figure.
QR25DE
CAUTION:
●Apply new engine oil when installing the parts that specified to do so in the figure.
KBIA0238E
1. Fuel hose 2. Quick connector cap 3. Sub harness
4. Fuel tube 5. Clip 6. O-ring
7. Fuel injector 8. Insulator
SBIA0247E
1. Fuel hose 2. Quick connector cap 3. Sub harness
4. Fuel tube 5. Clip 6. O-ring
7. Fuel injector 8. Insulator

FUEL INJECTOR AND FUEL TUBE
EM-33
[QR]
C
D
E
F
G
H
I
J
K
L
MA
EM
●Do not remove or disassembly parts unless instructed as shown in the figure.
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. Remove air duct, air cleaner case (upper) assembly.
3. Disconnect fuel hose quick connector at fuel tube side.
●Regarding how to disconnect and connect quick connector, Refer to EM-16, "INTAKE MANIFOLD" .
CAUTION:
●Prepare a container of cloth for spilled fuel.
●This operation should be performed, in a place where free from fire.
●While hoses are disconnected seal their openings with vinyl bag or similar material to prevent
foreign material from entering them.
4. Remove intake manifold collector. Refer to EM-16, "
INTAKE MANIFOLD" .
5. Disconnect sub-harness for injector at engine front side, and remove it from bracket.
6. Loosen mounting bolts in the reverse order in the figure, and
remove fuel tube and fuel injector assembly.
7. Remove fuel tube and fuel injector assembly.
●Release clip and remove it.
●Pull fuel injector straight out of fuel tube.
●Be careful not to damage nozzle part.
●Avoid any impact such as a dropping.
●Do not disassemble or adjust it.
INSTALLATION
1. Install O-rings to fuel injector paying attention to the items below.
●Lubricate O-rings by smearing new engine oil.
●Be careful not to scratch it with a tool or fingernails dur-
ing installation. Also be careful not to twist or stretch O-
ring. If O-ring was stretched while it is attached, do no
insert it into fuel tube immediately.
2. Install fuel injector to fuel tube with the following procedure.
●Insert clip into clip mounting groove on fuel injector.
●Insert clip so that projection A of fuel injector matches notch A
of the clip.
●Do not reuse clip. Replace it with a new one.
●Be careful to keep clip from interfering with O-ring. If interfer-
ence occurs, replace O-ring.
3. Insert fuel injector into fuel tube with clip attached.
●Insert it while matching it to the axial center.
●Insert fuel injector so that projection B of fuel injector matches
notch B of the clip.
●Make sure that fuel tube flange is securely fixed in flange fixing groove on clip.
●Make sure that installation is complete by checking that fuel injector does not rotate or come off.
4. Install fuel tube assembly with the following procedure.
a. Insert the tip of each fuel injector into intake manifold.
KBIA0239E
O-ring color
Fuel tube side (Upper side) : Black
Intake manifold side (Lower side) : Green
SBIA0439E

EM-34
[QR]
FUEL INJECTOR AND FUEL TUBE
b. Tighten mounting bolts in two steps in the numerical order
shown in the figure.
5. Install intake manifold collector. Refer to EM-16, "
INTAKE MANI-
FOLD" .
6. Connect fuel hose. Refer to EM-16, "
INTAKE MANIFOLD" .
7. Install all removed parts in the reverse order of removal.
INSPECTION AFTER INSTALLATION
Check connections for fuel leakage.
1. Start the engine, and run it for a few minutes with engine at idle.
2. Stop the engine, and check for fuel leakage both visually and by odor of gasoline.
NOTE:
Use mirrors for checking on invisible points.
CAUTION:
Do not touch the engine immediately after stopped as engine becomes extremely hot. 1st step:
: 9.3 - 10.8 N·m (0.95 - 1.1 kg-m, 0.7 - 0.8 ft-lb)
2nd step:
: 20.6 - 26.5 N·m (2.1 - 2.7 kg-m, 16 - 19 ft-lb)
KBIA0239E

TIMING CHAIN
EM-37
[QR]
C
D
E
F
G
H
I
J
K
L
MA
EM
TIMING CHAINPFP:13028
Removal and InstallationEBS00KNL
CAUTION:
Apply new engine oil to parts marked in illustration before installation.
PBIC1261E
1. O-ring 2. Camshaft sprocket (INT) 3. Camshaft sprocket (EXH)
4. Chain tensioner 5. Spring 6. Chain tensioner plunger
7. Timing chain slack guide 8. Timing chain 9. Front cover
10. Chain guide 11.Intake valve timing control solenoid
valve12. Intake valve timing control cover
13. Engine mounting bracket 14. Crankshaft pulley bolt 15. Crankshaft pulley
16. Front oil seal 17. Balancer unit timing chain tensioner 18. Oil pump drive spacer
19. Crankshaft sprocket 20. Timing chain tension guide 21. Balancer unit timing chain
22. Balancer unit 23. Oil rings