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AIR CLEANER AND AIR DUCT
EM-15
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CHANGING AIR CLEANER FILTER
1. Remove clips and lift up air cleaner upper case.
2. Remove air cleaner filter.
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EM-16
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INTAKE MANIFOLD
INTAKE MANIFOLD
PFP:14003
Removal and InstallationEBS00KNC
QR20DE
PBIC1260E
1. Bracket 2. PCV hose 3. Intake manifold collector
4. Gasket 5. Electric throttle control actuator 6. Intake manifold support
7.EVAP canister purge volume control
solenoid valve8. Vacuum hose 9. Intake manifold
10. Ground cable
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![NISSAN X-TRAIL 2001 Service Repair Manual INTAKE MANIFOLD
EM-17
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QR25DE
REMOVAL
WARNING:
To avoid the danger of being scalded, never drain the coolant when the engine is hot.
1. Disconnect mass air flow sensor ha NISSAN X-TRAIL 2001 Service Repair Manual INTAKE MANIFOLD
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QR25DE
REMOVAL
WARNING:
To avoid the danger of being scalded, never drain the coolant when the engine is hot.
1. Disconnect mass air flow sensor ha](/manual-img/5/57405/w960_57405-66.png)
INTAKE MANIFOLD
EM-17
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QR25DE
REMOVAL
WARNING:
To avoid the danger of being scalded, never drain the coolant when the engine is hot.
1. Disconnect mass air flow sensor harness connector from mass air flow sensor and clamp.
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 air cleaner case and air duct assembly. Refer to EM-14, "
AIR CLEANER AND AIR DUCT" .
4. Drain coolant when engine is cooled. Refer to CO-9, "
DRAINING ENGINE COOLANT" .
SBIA0229E
1. Bracket 2. PCV hose 3. Intake manifold collector
4. Gasket 5. Electric throttle control actuator 6. Intake manifold support
7.EVAP canister purge volume control
solenoid valve8. Vacuum hose 9. Intake manifold
10. Vacuum reservoir tank 11. VIAS control solenoid valve
Page 68 of 3833
![NISSAN X-TRAIL 2001 Service Repair Manual EM-18
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INTAKE MANIFOLD
5. Disconnect fuel hose quick connector on engine side.
●Using tool of quick connector release (here in after “release”),
perform the following steps to disconnect qui NISSAN X-TRAIL 2001 Service Repair Manual EM-18
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INTAKE MANIFOLD
5. Disconnect fuel hose quick connector on engine side.
●Using tool of quick connector release (here in after “release”),
perform the following steps to disconnect qui](/manual-img/5/57405/w960_57405-67.png)
EM-18
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INTAKE MANIFOLD
5. Disconnect fuel hose quick connector on engine side.
●Using tool of quick connector release (here in after “release”),
perform the following steps to disconnect quick connector.
a. Remove quick connector cap.
b. With the sleeve side of release facing quick connector, install
release onto fuel tube.
c. Insert release into quick connector until sleeve contacts and
goes no further. Hold the release on that position.
CAUTION:
Inserting the release hard will not disconnect quick connec-
tor. Hold release where it contacts and goes no further.
d. Draw and pull out quick connector straight from fuel tube.
CAUTION:
●Pull quick connector holding A position in illustration.
●Do not pull with lateral force applied. O-ring inside quick connector may be damaged.
●Prepare container and cloth beforehand as fuel will leak out.
●Avoid fire and sparks.
●Be sure to cover openings of disconnected pipes with plug or plastic bag to avoid fuel leakage
and entry of foreign materials.
6. Disconnect fuel hose quick connector at vehicle piping side, perform as follows.
a. Remove quick connector cap.
b. Hold the sides of the connector, push in tubs and pull out the
tube. (The figure is shown for reference only.)
●If the connector and the tube are stuck together, push and pull
several times until they start to move. Then disconnect them
by pulling.
CAUTION:
●The quick connector can be disconnected when the
tabs are completely depressed. Do not twist it more
than necessary.
●Do not use any tools to disconnect the quick connec-
tor.
●Keep the resin tube away from heat. Be especially careful when welding near the tube.
●Prevent acid liquid such as battery electrolyte etc. from getting on the resin tube.
KBIA0268E
KBIA0702E
KBIA0701E
SFE562A
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●Do not bend or twist the tube during installation and removal.
●Do not remove the remaining retainer on tube.
●When the tube is replaced, al NISSAN X-TRAIL 2001 Service Repair Manual INTAKE MANIFOLD
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●Do not bend or twist the tube during installation and removal.
●Do not remove the remaining retainer on tube.
●When the tube is replaced, al](/manual-img/5/57405/w960_57405-68.png)
INTAKE MANIFOLD
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●Do not bend or twist the tube during installation and removal.
●Do not remove the remaining retainer on tube.
●When the tube is replaced, also replace the retainer with a new one.
●To keep clean the connecting portion and to avoid
damage and foreign materials, cover them completely
with plastic bags or something similar.
7. Loosen mounting bolts diagonally in reverse order shown, and
remove electric throttle control actuator.
CAUTION:
●Handle carefully to avoid any shock.
●Do not disassemble.
8. Disconnect intake manifold collector harness, vacuum hose, and PCV hose.
CAUTION:
Cover engine openings to avoid entry of foreign materials.
9. Remove intake manifold collector mounting bolts on the support.
For QR20DE
Loosen mounting bolts and nuts in order from No. 5 to 1, and
remove intake manifold collector.
●Disregard No. 6 when loosening.
For QR25DE
Loosen mounting bolts and nuts in order from No. 7 to 1, and
remove intake manifold collector.
●Disregard No. 8 when loosening.
10. Disconnect harness and power steering piping from intake man-
ifold and fuel tube assembly, and move them a side.
11. Remove intake manifold mounting bolts on the support.
PBIC0163E
EMJ1612D
KBIA0234E
SBIA0230E
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EM-20
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INTAKE MANIFOLD
For QR20DE
Loosen mounting bolts and nuts in order from No. 5 to 1, and
remove intake manifold assembly.
●Disregard No. 6 when loosening.
For QR25DE
Loosen mounting bolts and nuts in order from No. 5 to 1, and
remove intake manifold assembly.
●Disregard No. 6 when loosening.
INSPECTION AFTER REMOVAL
Surface Distortion
Using straightedge and feeler gauge, inspect surface distortion of
intake manifold collector and intake manifold surface.
INSTALLATION
Install in the reverse order of removal paying attention to the following.
Intake Manifold Bolts and Nuts
For QR20DE
Tighten in numerical order as shown in the figure.
NOTE:
No. 6 means double tightening of bolt No. 1.
KBIA0233E
SBIA0231E
Standard: 0.1 mm (0.004 in)
KBIA0235E
KBIA0233E
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INTAKE MANIFOLD
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For QR25DE
Tighten in numerical order as shown in the figure.
NOTE:
No. 6 means double tightening of bolt No. 1.
Intake Manifold Collector Bolts and Nuts
For QR20DE
Tighten in numerical order as shown in the figure.
NOTE:
No. 6 means double tightening of bolts No. 1.
For QR25DE
Tighten in numerical order as shown in the figure.
NOTE:
No. 8 means double tightening of bolts No. 1.
Electric Throttle Control Actuator
●Tighten fixing bolts of electric throttle control actuator equally
and diagonally in several steps and in order shown.
●After installation perform procedure, refer to EM-22, "INSPEC-
TION AFTER INSTALLATION" .
Connecting Quick Connector of Fuel Hose (Engine 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. Thinly apply new engine oil around the fuel tube tip end.
SBIA0231E
KBIA0234E
SBIA0230E
EMJ1612D
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![NISSAN X-TRAIL 2001 Service Repair Manual EM-22
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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 NISSAN X-TRAIL 2001 Service Repair Manual EM-22
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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](/manual-img/5/57405/w960_57405-71.png)
EM-22
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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