2005 NISSAN X-TRAIL engine coolant

CYLINDER HEAD
EM-71
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If the engine speed is out of specified range, check battery liquid for proper gravity. Check engine
speed again with normal battery gravity.

If compression pressure is below minimum value, check valve clearances and parts associated with
combustion chamber (Valve, valve seat, piston, piston ring, cylinder bore, cylinder head, cylinder head
gasket). After the checking, measure the compression pressure again.

If some cylinder has low compression pressure, pour small amount of engine oil into the spark plug hole
of the cylinder to re-check it for compression.
–If the added engine oil improves the compression, piston rings may be worn out or damaged. Check
piston rings and replace if necessary.
–If the compression pressure remains at low level despite the addition of engine oil, valves may be mal-
functioning. Check valves for damage. Replace valve or valve seat accordingly.

If two adjacent cylinders have respectively low compression pressure and their compression remains
low even after the addition of engine oil, gaskets are leaking. In such a case, replace cylinder head gas-
kets.
8. After inspection is completed, install removed parts.
9. Start engine, and confirm that engine runs smoothly.
10. Perform trouble diagnosis. If DTC appears, erase it. Refer to EC-73, "
TROUBLE DIAGNOSIS" (WITH
EURO-OBD) or EC-572, "
TROUBLE DIAGNOSIS" (WITHOUT EURO-OBD).
Removal and InstallationEBS00KNQ
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. Drain engine coolant and engine oil. Refer to CO-9, "
Changing Engine Coolant" and LU-8, "Changing
Engine Oil" .
3. Remove the following components and related parts.

Exhaust manifold and three way catalyst assembly; Refer to EM-25, "EXHAUST MANIFOLD AND
THREE WAY CATALYST" .

Intake manifold and fuel tube assembly (QR20DE); Refer to EM-18, "Removal and Installation
(QR20DE)" .

Intake manifold collector, intake manifold and fuel tube assembly (QR25DE); Refer to EM-21, "Removal
and Installation (QR25DE)" .

Water control valve and water control valve housing (water outlet); Refer to CO-23, "THERMOSTAT
AND WATER CONTROL VALVE" .
1. Cylinder head assembly 2. Cylinder head gasket 3. Cylinder head bolt
PBIC2185E

CYLINDER HEAD
EM-73
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INSTALLATION
1. Install cylinder head gasket.
2. Tighten cylinder head bolts in numerical order as shown in figure
with the following procedure, and install cylinder head.
CAUTION:
If cylinder head bolts are re-used, check their outer diame-
ters before installation. Refer to EM-72, "
Cylinder Head
Bolts Outer Diameter" .
a. Apply new engine oil to threads and seating surface of mounting
bolts.
b. Tighten all bolts.
c. Turn all bolts 60 degrees clockwise (angle tightening).
d. Completely loosen.
CAUTION:
In this step, loosen bolts in reverse order of that indicated in the figure.
e. Tighten all bolts.
f. Turn all bolts 75 degrees clockwise (angle tightening).
g. Turn all bolts 75 degrees clockwise again (angle tightening).
CAUTION:
Check and confirm the tightening angle by using an angle
wrench (special service tool) or protractor. Avoid judgment
by visual inspection without the tool.
3. Install in the reverse order of removal after this step.
INSPECTION AFTER INSTALLATION
Inspection for Leaks
The following are procedures for checking fluids leak, lubricates leak and exhaust gases leak.

Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-17, "
RECOMMENDED FLUIDS AND LUBRICANTS" .

Use procedure below to check for fuel leakage.
–Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
–Start engine. With engine speed increased, check again for fuel leakage at connection points.

Run engine to check for unusual noise and vibration.

Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gases, or any oil/fluids
including engine oil and engine coolant.

Bleed air from lines and hoses of applicable lines, such as in cooling system.

After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary. : 50 N·m (5.1 kg-m, 37 ft-lb)
: 0 N·m (0 kg-m, 0 ft-lb)
: 39.2 N·m (4.0 kg-m, 29 ft-lb)
KBIA0058E
KBIA0059E

EM-74
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CYLINDER HEAD

Summary of the inspection items:
* Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.
Disassembly and AssemblyEBS00KNR
DISASSEMBLY
1. Remove spark plug with spark plug wrench (commercial service tool).
2. Remove spark plug tube, if necessary.

Using pliers, remove it from cylinder head.
CAUTION:

Be careful not to damage cylinder head.

Do not remove spark plug tube if not necessary. Once removed, spark plug tube cannot be
reused because of deformation.
3. Remove valve lifter.

Identify installation positions, and store them without mixing them up.
4. Remove valve collet.
Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Other oils and fluid* Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gases — Leakage —
1. Valve collet 2. Valve spring retainer 3. Valve spring (with valve spring seat)
4. Valve oil seal 5. Valve guide 6. Cylinder head
7. Valve seat 8. Valve (INT) 9. Valve (EXH)
10. Spark plug tube 11. Spark plug
PBIC2629E

ENGINE ASSEMBLY
EM-81
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ENGINE ASSEMBLYPFP:10001
Removal and Installation (2WD Models)EBS01FKJ
WARNING:

Situate the vehicle on a flat and solid surface.

Place chocks at front and back of rear wheels.

For engines not equipped with engine slingers, attach proper slingers and bolts described in
PARTS CATALOG.
CAUTION:

Always be careful to work safely, avoid forceful or uninstructed operations.

Do not start working until exhaust system and coolant are cool enough.

If items or work required are not covered by the engine section, refer to the applicable sections.

Always use the support point specified for lifting.

Use either 2-pole lift type or separate type lift as best you can. If board-on type is used for
unavoidable reasons, support at the rear axle jacking point with a transmission jack or similar tool
before starting work, in preparation for the backward shift of center of gravity.

For supporting points for lifting and jacking point at rear axle, refer to GI-36, "Garage Jack and
Safety Stand" .
1. Rear engine mounting insulator 2. Rubber seat 3. Rear engine mounting bracket
4. RH engine mounting insulator 5. RH engine mounting bracket 6. Front engine mounting bracket
7. Front engine mounting insulator 8. Grommet 9. Center member
10. LH engine mounting insulator 11. Stopper 12. LH engine mounting bracket
PBIC3831E

EM-82
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ENGINE ASSEMBLY

REMOVAL
Outline
Remove engine and transaxle assembly from vehicle downward. Separate engine and transaxle.
Preparation
1. Remove hood assembly. Refer to BL-12, "HOOD" .
2. Release fuel pressure. Refer to EC-49, "
FUEL PRESSURE RELEASE" (WITH EURO-OBD) or EC-562,
"FUEL PRESSURE RELEASE" (WITHOUT EURO-OBD).
3. Drain engine coolant from radiator. Refer to CO-9, "
Changing Engine Coolant" .
CAUTION:

Perform this step when the engine is cold.

Do not spill engine coolant on drive belt.
4. Remove the following parts.

LH and RH undercovers

Front road wheels and tyres

Battery; Refer to SC-4, "BATTERY" .

Drive belt; Refer to EM-13, "DRIVE BELTS" .

Air duct and air cleaner case assembly; Refer to EM-16, "AIR CLEANER AND AIR DUCT" .

Alternator; Refer to SC-13, "CHARGING SYSTEM" .

Radiator and radiator cooling fan assembly; Refer to CO-12, "RADIATOR" .
5. Disconnect engine room harness from the engine side and set it aside for easier work.
6. Disconnect all vacuum hoses and air hoses connected to vehicle side at engine side.
Engine Room LH
1. Disconnect fuel feed hoses, and plug them to prevent fuel from draining. Refer to EM-34, "FUEL INJEC-
TOR AND FUEL TUBE" .
2. Disconnect heater hoses, and install plugs them to prevent engine coolant from draining. Refer to CO-23,
"THERMOSTAT AND WATER CONTROL VALVE" .
3. Disconnect clutch operating cylinder from transaxle, and move it aside. Refer to CL-12, "
OPERATING
CYLINDER" .
4. Disconnect shift and select cable from transaxle. Refer to MT-16, "
CONTROL LINKAGE" .
5. Disconnect B terminal harness of starter motor. Refer to SC-23, "
STARTING SYSTEM" .
Engine Room RH
1. Remove engine coolant reservoir tank. Refer to CO-12, "RADIATOR" .
2. Remove A/C compressor with piping connected from engine. Temporarily secure it on vehicle side with a
rope to avoid putting load on it. Refer to ATC-144, "
Removal and Installation of Compressor" .
3. Remove power steering oil pump with piping connected from engine. Temporarily secure it on vehicle side
with a rope to avoid putting load on it. Refer to PS-37, "
HYDRAULIC LINE" .
Vehicle Underbody
1. Remove exhaust front tube. Refer to EX-2, "EXHAUST SYSTEM" .
2. Remove transaxle joint bolts which pierce at oil pan (upper) lower rear side. Refer to MT-19, "
TRAN-
SAXLE ASSEMBLY" .
3. Remove front wheel sensor (LH and RH) for ABS from steering knuckle. Refer to BRC-46, "
WHEEL SEN-
SORS" .
4. Remove brake caliper assembly with piping connected from steering knuckle. Temporarily secure it on the
vehicle side with a rope to avoid load on it. Refer to BR-27, "
FRONT DISC BRAKE" .
5. Remove LH and RH drive shafts from steering knuckle. Refer to FAX-11, "
FRONT DRIVE SHAFT" .
Removal
1. Install engine slingers into front-left of cylinder head and rear-right of cylinder head.

EM-84
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ENGINE ASSEMBLY

INSPECTION AFTER INSTALLATION
Inspection for Leaks
The following are procedures for checking fluids leak, lubricates leak and exhaust gases leak.

Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-17, "
RECOMMENDED FLUIDS AND LUBRICANTS" .

Use procedure below to check for fuel leakage.
–Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
–Start engine. With engine speed increased, check again for fuel leakage at connection points.

Run engine to check for unusual noise and vibration.

Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gases, or any oil/fluids
including engine oil and engine coolant.

Bleed air from lines and hoses of applicable lines, such as in cooling system.

After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.
Summary of the inspection items:
* Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Other oils and fluid* Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gases — Leakage —

ENGINE ASSEMBLY
EM-85
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Removal and Installation (4WD Models)EBS00KNT
WARNING:

Situate vehicle on a flat and solid surface.

Place chocks at front and back of rear wheels.

For engines not equipped with engine slingers, attach proper slingers and bolts described in
PARTS CATALOG.
CAUTION:

Always be careful to work safely, avoid forceful or uninstructed operations.

Do not start working until exhaust system and engine coolant are cool enough.

If items or work required are not covered by the engine section, refer to the applicable sections.

Always use the support point specified for lifting.

Use either 2-pole lift type or separate type lift as best you can. If board-on type is used for
unavoidable reasons, support at the rear axle jacking point with transmission jack or similar tool
before starting work, in preparation for the backward shift of center of gravity.

For supporting points for lifting and jacking point at rear axle, refer to GI-36, "Garage Jack and
Safety Stand" .
REMOVAL
Outline
Remove engine, transaxle and transfer assembly with front suspension member from vehicle downward. Sep-
arate front suspension member, and then separate engine and transaxle.
Preparation
1. Remove hood assembly. Refer to BL-12, "HOOD" .
1. Rear engine mounting insulator 2. Rear engine mounting bracket 3. RH engine mounting insulator
4. RH engine mounting bracket 5. Front engine mounting bracket 6. Front engine mounting insulator
7. Center member 8. LH engine mounting insulator 9. LH engine mounting bracket
10. Stopper 11. Grommet
PBIC3830E

EM-86
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ENGINE ASSEMBLY

2. Release fuel pressure. Refer to EC-49, "FUEL PRESSURE RELEASE" (WITH EURO-OBD) or EC-562,
"FUEL PRESSURE RELEASE" (WITHOUT EURO-OBD).
3. Drain engine coolant from radiator. Refer to CO-9, "
DRAINING ENGINE COOLANT" .
4. Remove the following parts.

LH and RH undercovers

Front road wheels and tyres

Battery; Refer to SC-4, "BATTERY" .

Drive belt; Refer to EM-13, "DRIVE BELTS" .

Air duct and air cleaner case assembly; Refer to EM-16, "AIR CLEANER AND AIR DUCT" .

Alternator; Refer to SC-13, "CHARGING SYSTEM" .

Radiator and radiator cooling fan assembly; Refer to CO-12, "RADIATOR" .
5. Disconnect engine room harness from the engine side and set it aside for easier work.
6. Disconnect all vacuum hoses and air hoses connected to vehicle side at engine side.
Engine Room LH
1. Disconnect fuel feed hose, and plug it to prevent fuel from draining. Refer to EM-34, "FUEL INJECTOR
AND FUEL TUBE"
2. Disconnect heater hose, and install plug it to prevent engine coolant from draining.
3. Disconnect control cable from transaxle (A/T models). Refer to AT- 4 0 4 , "
ON-VEHICLE SERVICE" .
4. Disconnect clutch operating cylinder from transaxle, and move it aside (M/T models). Refer to CL-12,
"OPERATING CYLINDER" .
5. Disconnect shift and select cable from transaxle (M/T models). Refer to MT-16, "
CONTROL LINKAGE" .
Engine Room RH
1. Remove engine coolant reservoir tank. Refer to CO-12, "RADIATOR" .
2. Remove A/C compressor with piping connected from engine. Temporarily secure it on vehicle side with a
rope to avoid putting load on it. Refer to ATC-144, "
Removal and Installation of Compressor" .
Vehicle Underbody
1. Remove exhaust front tube. Refer to EX-2, "EXHAUST SYSTEM" .
2. Remove propeller shaft. Refer to PR-3, "
REAR PROPELLER SHAFT" .
3. Remove steering lower joint from steering gear. Refer to PS-11, "
STEERING COLUMN" .
4. Disconnect power steering fluid piping at a point between vehicle and engine. Refer to PS-37, "
HYDRAU-
LIC LINE" .
5. Remove rear plate cover from oil pan (upper). Then remove bolts fixing drive plate to torque converter
(A/T models). Refer to EM-27, "
OIL PAN AND OIL STRAINER" and AT- 4 1 3 , "REMOVAL AND INSTALLA-
TION" .
6. Remove transaxle joint bolts which pierce at oil pan (upper) lower rear side. Refer to MT-19, "
TRAN-
SAXLE ASSEMBLY" (M/T models) or AT- 4 1 3 , "REMOVAL AND INSTALLATION" (A/T models).
7. Remove front wheel sensor (LH and RH) for ABS from steering knuckle. Refer to BRC-46, "
WHEEL SEN-
SORS" (ABS) or BRC-116, "WHEEL SENSORS" (ESP/TCS/ABS).
8. Remove brake caliper assembly with piping connected from steering knuckle. Temporarily secure it on
vehicle side with a rope to avoid load on it. Refer to BR-27, "
FRONT DISC BRAKE" .
9. Remove lower ends of left and right strut from steering knuckle. Refer to FSU-5, "
FRONT SUSPENSION
ASSEMBLY" .
Removal
1. Install engine slingers into front left of cylinder head and rear right of cylinder head.