Nissan X-Trail 32. Manual - part 1071

EXHAUST MANIFOLD AND THREE WAY CATALYST

EM-181

< REMOVAL AND INSTALLATION >

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6.

Disconnect the air fuel ratio sensor 1 harness connector. 

7.

Remove the oil level gauge and oil level gauge guide. Refer to 

EM-247, "Exploded View"

.

8.

Move the resonator of air duct assembly, set it aside.

9.

Remove the exhaust manifold cover (upper).

10. Loosen the exhaust manifold and three way catalyst nuts in the

reverse order as shown.

11. Remove the exhaust manifold and three way catalyst assembly and gasket. Discard the gasket.
12. Remove the exhaust manifold covers (lower) and three way catalyst cover.

13. Remove the air fuel ratio sensor 1 

 using SST (A), (if neces-

sary).

CAUTION:

• Be careful not to damage air fuel ratio sensor.
• Discard any air fuel ratio sensor which has been dropped

from a height of more than 0.5 m (19.7 in) onto a hard sur-
face such as a concrete floor; replace with a new one.

INSTALLATION

Exhaust Manifold

1.

Install studs in cylinder head and exhaust manifold (if removed). Then tighten to specification.

CAUTION:

Do not reuse cylinder head or exhaust manifold studs.

2.

Install three way catalyst cover (if removed) and bolts. Then
tighten the bolts to specification in the numerical order shown.

CAUTION:

Do not reuse bolts.

:Engine front

JSBIA3332ZZ

SST numbers

: KV10117100

ALBIA0919GB

ALBIA0887GB

EM-182

< REMOVAL AND INSTALLATION >

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EXHAUST MANIFOLD AND THREE WAY CATALYST

3.

Install the exhaust manifold cover (lower) and bolts. Then
tighten the bolts to specification in the numerical order shown.

CAUTION:

Do not reuse bolts.

4.

Install the exhaust manifold and gasket. Then tighten the nuts to
specification in the numerical order shown. 

CAUTION:

• Do not reuse gasket.
• Do not reuse nuts.

5.

Install the air fuel ratio sensor 1 

 using SST (A) and tighten to

specification.

CAUTION:

• Be careful not to damage air fuel ratio sensor.
• Discard any air fuel ratio sensor which has been dropped

from a height of more than 0.5 m (19.7 in) onto a hard sur-
face such as a concrete floor; replace with a new one.

• Do not over-tighten the air fuel ratio sensor 1. Doing so

may cause damage to the air fuel ratio sensor 1, resulting
in a malfunction and the MIL coming on.

6.

Install the exhaust manifold cover (upper). Then tighten the bolts
to specification in the numerical order shown.

CAUTION:

Do not reuse bolts.

Inspection

INFOID:0000000010783790

INSPECTION AFTER REMOVAL

Surface Distortion

ALBIA0889GB

:Engine front

JSBIA3332ZZ

SST numbers

: KV10117100

ALBIA0919GB

ALBIA0888GB

EXHAUST MANIFOLD AND THREE WAY CATALYST

EM-183

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• Check the surface distortion of the exhaust manifold mating sur-

face with a straightedge (A) and a feeler gauge (B).

• If it exceeds the limit, replace exhaust manifold.

Limit

: Refer to 

EM-275, "Exhaust Manifold"

.

JSBIA3333ZZ

EM-184

< REMOVAL AND INSTALLATION >

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FUEL INJECTOR AND FUEL TUBE

FUEL INJECTOR AND FUEL TUBE

Exploded View

INFOID:0000000010783791

CAUTION:

Never remove or disassemble parts unless instructed in the figure.

Removal and Installation

INFOID:0000000010783792

WARNING:

• Put a “CAUTION: FLAMMABLE” sign in the workshop.
• Be sure to work in a well ventilated area and furnish workshop with a CO

2

 fire extinguisher. 

• Never smoke while servicing fuel system. Keep open flames and sparks away from the work area.

REMOVAL

1.

Release the fuel pressure. Refer to 

EC-558, "Work Procedure"

.

2.

Disconnect the battery negative terminal. Refer to 

PG-142, "EXCEPT FOR R9M : Removal and Installa-

tion"

.

3.

Remove intake manifold. Refer to 

EM-176, "Removal and Installation"

.

Cylinder head

O-ring (green)

Fuel injector

Clip

O-ring (black)

Fuel tube

To under floor piping

: Engine front

 : N·m (kg-m, ft-lb)

 : Always replace after every disassembly.

 : Should be lubricated with oil.

JSBIA4995GB