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NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
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NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting — Engine NoiseEBS00L7P
PBIC2768E
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![NISSAN X-TRAIL 2005 Service Repair Manual EM-12
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NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
Use the Chart Below to Help You Find the Cause of the Symptom.EBS00L7Q
1. Locate the area where noise occurs.
2. Confirm the type of n NISSAN X-TRAIL 2005 Service Repair Manual EM-12
[QR]
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
Use the Chart Below to Help You Find the Cause of the Symptom.EBS00L7Q
1. Locate the area where noise occurs.
2. Confirm the type of n](/manual-img/5/57403/w960_57403-65.png)
EM-12
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NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
Use the Chart Below to Help You Find the Cause of the Symptom.EBS00L7Q
1. Locate the area where noise occurs.
2. Confirm the type of noise.
3. Specify the operating condition of engine.
4. Check specified noise source.
If necessary, repair or replace these parts.
A: Closely related B: Related C: Sometimes related —: Not relatedLocation
of noiseType of
noiseOperating condition of engine
Source of
noiseCheck itemRefer-
ence page Before
warm-
upAfter
warm-
upWhen
start-
ingWhen
idlingWhen
racingWhile
driving
To p o f
engine
Rocker
cover
Cylinder
headTicking or
clickingCA—AB—Tappet
noiseValve clearanceEM-64
Rattle C A — A B CCamshaft
bearing
noiseCamshaft journal oil
clearance
Camshaft runoutEM-59EM-58
Crank-
shaft pul-
ley
Cylinder
block
(Side of
engine)
Oil panSlap or
knock—A—BB—Piston pin
noisePiston to piston pin oil
clearance
Connecting rod bush-
ing oil clearanceEM-107
EM-109
Slap or
rapA ——BBAPiston
slap noisePiston to cylinder bore
clearance
Piston ring side clear-
ance
Piston ring end gap
Connecting rod bend
and torsionEM-112EM-108
EM-108
EM-109
Knock A B CBBBConnect-
ing rod
bearing
noiseConnecting rod bush-
ing oil clearance
Connecting rod bear-
ing oil clearanceEM-109EM-113
Knock A B — A B CMain
bearing
noiseMain bearing oil clear-
ance
Crankshaft runoutEM-114EM-113
Front of
engine
Front
coverTapping or
tickingA A —BBBTiming
chain and
chain ten-
sioner
noiseTiming chain cracks
and wear
Timing chain tensioner
operationEM-50
EM-46
Front of
engineSqueak-
ing or fizz-
ingAB—B—CDrive belt
(Sticking
or slip-
ping)Drive belt deflection
EM-13
Creaking A B A B A BDrive belt
(Slipping)Idler pulley bearing
operation
Squall
CreakA B —BABWater
pump
noiseWater pump operationCO-21,
"WATER
PUMP"
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![NISSAN X-TRAIL 2005 Service Repair Manual DRIVE BELTS
EM-13
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DRIVE BELTSPFP:02117
Checking Drive BeltsEBS00KN7
WARNING:
Be sure to perform this step when the engine is stopped.
Make sure that the indicator (no NISSAN X-TRAIL 2005 Service Repair Manual DRIVE BELTS
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DRIVE BELTSPFP:02117
Checking Drive BeltsEBS00KN7
WARNING:
Be sure to perform this step when the engine is stopped.
Make sure that the indicator (no](/manual-img/5/57403/w960_57403-66.png)
DRIVE BELTS
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DRIVE BELTSPFP:02117
Checking Drive BeltsEBS00KN7
WARNING:
Be sure to perform this step when the engine is stopped.
Make sure that the indicator (notch on fixed side) of drive belt auto-tensioner is within the possible use
range (between three line notches on moving side).
NOTE:
Check the drive belt auto-tensioner indication when the engine is cold.
When new drive belt is installed, the indicator (notch on fixed side) should be within the range “a” in the
figure.
Visually check entire drive belt for wear, damage or cracks.
If the indicator (notch on fixed side) is out of the possible use range or belt is damaged, replace drive belt.
Tension AdjustmentEBS00KN8
Belt tensioning is not necessary, as it is automatically adjusted by drive belt auto-tensioner.
Removal and InstallationEBS00KN9
REMOVAL
1. Remove splash guard on RH undercover.
2. Hold the hexagonal part in center of drive belt auto-tensioner
pulley with a box wrench securely. Then move the wrench han-
dle in the direction of arrow (loosening direction of tensioner).
CAUTION:
Avoid placing hand in a location where pinching may
occur if the holding tool accidentally comes off.
Do not loosen the hexagonal part in center of drive belt
auto-tensioner pulley (Do not turn it counterclockwise). If
turned counterclockwise, the complete drive belt auto-
tensioner must be replaced as a unit, including the pul-
ley.
3. Insert a rod approximately 6 mm (0.24 in) in diameter such as
short-length screwdriver into the hole of the retaining boss to fix drive belt auto-tensioner pulley.
4. Loosen drive belt from water pump pulley in sequence, and remove it.
PBIC2622E
PBIC2169E
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![NISSAN X-TRAIL 2005 Service Repair Manual EM-14
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DRIVE BELTS
INSTALLATION
1. Hold the hexagonal part in center of drive belt auto-tensioner
pulley with a box wrench securely. Then move the wrench han-
dle in the direction of arrow (loos NISSAN X-TRAIL 2005 Service Repair Manual EM-14
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DRIVE BELTS
INSTALLATION
1. Hold the hexagonal part in center of drive belt auto-tensioner
pulley with a box wrench securely. Then move the wrench han-
dle in the direction of arrow (loos](/manual-img/5/57403/w960_57403-67.png)
EM-14
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DRIVE BELTS
INSTALLATION
1. Hold the hexagonal part in center of drive belt auto-tensioner
pulley with a box wrench securely. Then move the wrench han-
dle in the direction of arrow (loosening direction of tensioner).
CAUTION:
Avoid placing hand in a location where pinching may
occur if the holding tool accidentally comes off.
Do not loosen the hexagonal part in center of drive belt
auto-tensioner pulley (Do not turn it counterclockwise). If
turned counterclockwise, the complete drive belt auto-
tensioner must be replaced as a unit, including the pul-
ley.
2. Insert a rod approximately 6 mm (0.24 in) in diameter such as
short-length screwdriver into the hole of retaining boss to fix drive belt auto-tensioner pulley.
3. Hook drive belt onto all pulleys except for water pump, and then onto water pump pulley finally.
CAUTION:
Confirm drive belt is completely set to pulleys.
Check for engine oil, working fluid and engine coolant are not adhered to drive belt and each
pulley groove.
4. Release drive belt auto-tensioner, and apply tension to drive belt.
5. Turn crankshaft pulley clockwise several times to equalize tension between each pulley.
6. Confirm tension of drive belt at indicator (notch on fixed side) is within the possible use range. Refer to
EM-13, "
Checking Drive Belts" .
Removal and Installation of Drive Belt Auto-TensionerEBS00KNA
REMOVAL
CAUTION:
The complete drive belt auto-tensioner must be replaced as a unit, including the pulley.
1. Remove splash guard on RH undercover.
2. Remove drive belt. Refer to EM-13, "
Removal and Installation" .
3. Release the fixed drive belt auto-tensioner pulley.
4. Remove drive belt auto-tensioner.
PBIC2627E
1. Drive belt auto-tensioner 2. Water pump pulley
PBIC2170E
Page 69 of 4555
DRIVE BELTS
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CAUTION:
Do not loosen the hexagonal part in center of drive belt auto-tensioner pulley (Do not turn it counter-
clockwise). If turned counterclockwise, the complete drive belt auto-tensioner must be replaced as a
unit, including the pulley.
INSTALLATION
Note the following, and install in the reverse order of removal.
When installing drive belt auto-tensioner, be careful not to interfere with water pump pulley.
CAUTION:
If there is damage greater than peeled paint, replace drive belt auto-tensioner.
Do not swap the pulley between new and old drive belt auto-tensioner.
Page 70 of 4555
EM-16
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AIR CLEANER AND AIR DUCT
AIR CLEANER AND AIR DUCTPFP:16500
Removal and InstallationEBS00KNB
REMOVAL
1. Remove mass air flow sensor harness clamp.
2. Disconnect harness connector from mass air flow sensor.
3. Disconnect PCV hose.
4. Remove air duct (inlet), air ducts and air cleaner case/mass air flow sensor assembly disconnecting their
joints.
Add marks as necessary for easier installation.
5. Remove mass air flow sensor from air cleaner case upper, as necessary.
CAUTION:
Handle mass air flow sensor with following cares.
Do not shock it.
Do not disassemble it.
Do not touch its sensor.
1. Air cleaner filter 2. Clip 3. Air cleaner case upper
4. Clamp 5. Air duct 6. PCV hose
7. Clamp 8. Bracket 9. Mass air flow sensor
10. O-ring 11. Air duct 12. Air duct (inlet)
13. Clip 14. Collar 15. Grommet
16. Resonator 17. Bracket (A/T models) 18. Mounting rubber
19. Collar 20. Grommet 21. Air cleaner case lower
PBIC3598E
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AIR CLEANER AND AIR DUCT
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6. Remove resonator in fender lifting left fender protector, as necessary.
INSTALLATION
Note the following, and install in the reverse order of removal.
Align marks. Attach each joint. Screw clamps firmly.
Changing Air Cleaner FilterEBS0123Q
REMOVAL
1. Unfasten clips and lift up air cleaner case upper.
2. Remove air cleaner filter.
INSTALLATION
Installation is the reverse order of removal.
Page 72 of 4555
EM-18
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INTAKE MANIFOLD
INTAKE MANIFOLDPFP:14003
Removal and Installation (QR20DE)EBS00KNC
REMOVAL
1. Release fuel pressure. Refer to EC-49, "FUEL PRESSURE RELEASE" (WITH EURO-OBD) or EC-562,
"FUEL PRESSURE RELEASE" (WITHOUT EURO-OBD).
2. Remove air cleaner case upper, mass air flow sensor and air duct assembly. Refer to EM-16, "
AIR
CLEANER AND AIR DUCT" .
3. Remove quick connector caps, and disconnect quick connectors
at engine side and vehicle side. Refer to EM-34, "
Removal and
Installation (QR20DE)" .
4. Remove electric throttle control actuator with the following procedure:
a. Disconnect harness connector.
1. Vacuum hose 2. Intake manifold 3. PCV hose
4. Bracket 5. Gasket 6. Electric throttle control actuator
7. Gasket 8. Intake manifold support 9. Gasket
10. Vacuum hose 11.EVAP canister purge volume con-
trol solenoid valve12. Vacuum hose
13. Bracket 14. Bracket
PBIC2172E
PBIC2175E