Nissan X-Trail 32. Manual - part 1070

INTAKE MANIFOLD

EM-177

< REMOVAL AND INSTALLATION >

[QR25DE]

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4.

Disconnect the PCV hose from the intake manifold.

5.

Disconnect the EVAP hose 

 and EVAP canister purge volume

control solenoid connector 

.

6.

Disconnect the brake booster vacuum hose from the intake manifold.

7.

Disconnect the water hoses from the electric throttle control actuator.
NOTE:
When removing only intake manifold, position electric throttle control actuator aside without disconnecting
the water hose.

8.

Loosen bolts in reverse order as shown, then remove electric
throttle control actuator and gasket.

CAUTION:

Handle carefully to avoid any damage.

9.

Disconnect electrical harness clip and harness connectors from
the intake manifold runner control valve actuator 

, intake man-

ifold runner control valve position sensor 

.

10. Disconnect oil cooler hose clamp 

.

JSBIA4475ZZ

JSBIA4471ZZ

: Clamp

JSBIA4474ZZ

: Intake manifold runner control valve actuator

: Intake manifold runner control valve position sensor

JSBIA4474ZZ

EM-178

< REMOVAL AND INSTALLATION >

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INTAKE MANIFOLD

11. Remove the bolts and nuts in the reverse order shown using

power tools and remove the intake manifold assembly with gas-
ket.

CAUTION:

Cover engine openings to prevent entry of foreign materi-
als.
NOTE:
Disregard No. 6 when loosening.

INSTALLATION

Installation is in the reverse order of removal. Follow the tightening sequences and specifications below and
perform the following:
• Perform the 

″

Throttle Valve Closed Position Learning

″

 when harness connector of electric throttle control

actuator is disconnected. Refer to 

EC-554, "Work Procedure"

.

• Perform the 

″

Idle Air Volume Learning

″

 and 

″

Throttle Valve Closed Position Learning

″

 when electric throttle

control actuator is replaced. Refer to 

EC-555, "Work Procedure"

 or 

EC-554, "Work Procedure"

.

Intake Manifold

1.

Securely install gasket to the mounting groove.

CAUTION:

Do not reuse gasket.

2.

If studs were removed, install them and tighten to specification. 

3.

Tighten in numerical order as shown.

CAUTION:

After tightening the five bolts in the order shown, the 1, 6
position designates that the first bolt tightened is to be
retightened to specification.

Electric Throttle Control Actuator

1.

Install a new gasket on the electric throttle control actuator. 

CAUTION:

Do not reuse gasket. 

2.

Tighten the bolts of electric throttle control actuator equally and
diagonally in several steps in numerical order as shown.

JSBIA4472ZZ

Studs 

: 9.4 N·m (0.96 kg-m, 83 in-lb)

Bolts 1, 2, 3, 6

: 25.0 N·m (2.6 kg-m, 18 ft-lb)

Nuts 4, 5

: 25.0 N·m (2.6 kg-m, 18 ft-lb)

JSBIA4472ZZ

JSBIA4471ZZ

INTAKE MANIFOLD

EM-179

< REMOVAL AND INSTALLATION >

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Inspection

INFOID:0000000010783787

INSPECTION AFTER REMOVAL

1.

Make sure there are no fuel leaks at connections as follows:

a.

Apply fuel pressure to fuel lines by turning ignition switch ON (with engine stopped).Then check for fuel
leaks at connections.
NOTE:
Use mirrors for checking on connections out of the direct line of sight.

b.

Start the engine and rev it up and check for fuel leaks at connections.

WARNING:

Do not touch engine immediately after stopping as engine is extremely hot.

EM-180

< REMOVAL AND INSTALLATION >

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EXHAUST MANIFOLD AND THREE WAY CATALYST

EXHAUST MANIFOLD AND THREE WAY CATALYST

Exploded View

INFOID:0000000010783788

Removal and Installation

INFOID:0000000010783789

REMOVAL

1.

Remove the engine under cover. Refer to 

EXT-39, "ENGINE UNDER COVER : Exploded View"

.

2.

Remove the exhaust front tube 1. Refer to 

EX-12, "Exploded View"

.

3.

Remove the air duct 1. Refer to 

EM-175, "Removal and Installation"

.

4.

Remove the drive belt. Refer to 

EM-166, "Removal and Installation"

.

5.

Remove the alternator. Refer to 

CHG-46, "QR25DE : Removal and Installation"

.

Gasket

Three way catalyst cover

Exhaust manifold cover (lower)

Exhaust manifold and three way cat-
alyst assembly

Exhaust manifold cover (upper)

Air fuel ratio sensor 1

 : N·m (kg-m, ft-lb)

 : N·m (kg-m, in-lb)

 : Always replace after every disassembly.

JSBIA3331GB