Infiniti G35 (V35). Manual - part 467

INTAKE MANIFOLD

EM-23

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INTAKE MANIFOLD

PFP:14003

Components

NBS000JW

Removal and Installation

NBS000JX

REMOVAL

1.

Release fuel pressure. Refer to 

EC-81, "FUEL PRESSURE RELEASE"

 .

2.

Remove intake manifold collectors (upper and lower). Refer to 

EM-18, "INTAKE MANIFOLD COLLEC-

TOR"

 .

3.

Remove fuel tube and fuel injector assembly. Refer to 

EM-38, "FUEL INJECTOR AND FUEL TUBE"

 .

4.

Loosen bolts and nuts in reverse order as shown in the figure to
remove intake manifold.

5.

Remove intake manifold gaskets.

CAUTION:

Cover engine openings to avoid entry of foreign materials.

1.

Harness bracket

2.

Intake manifold

3.

Gasket

KBIA1286E

PBIC0778E

EM-24

INTAKE MANIFOLD

INSPECTION AFTER REMOVAL
Surface Distortion

●

Check the surface distortion of  the intake manifold mating sur-
face with straightedge and feeler gauge.

●

If it exceeds the limit, replace intake manifold.

INSTALLATION

Note the following, and install in the reverse order of removal.

Intake Manifold

●

If stud bolts were removed, install them and tighten to the specified torque below.

●

Tighten all mounting bolts and nuts to the specified torque in two
or more steps in numerical order shown in the figure.

Limit

: 0.1 mm (0.004 in)

PBIC0870E

 : 9.8 - 11.8 N·m (1.0 - 1.2 kg-m, 87 - 104 in-lb)

 1st step

: 4.9 - 9.8 N·m (0.5 - 1.0 kg-m, 4 - 7 ft-lb)

 2nd step and after

: 26.5 - 31.4 N·m (2.7 - 3.2 kg-m, 20 - 23 ft-lb)

PBIC0778E

EXHAUST MANIFOLD AND THREE WAY CATALYST

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EXHAUST MANIFOLD AND THREE WAY CATALYST

PFP:14004

Components

NBS002UK

Removal and Installation

NBS002UL

REMOVAL

WARNING:

Perform the work when the exhaust and cooling system have completely cooled down.

1.

Remove engine cover with power tool. Refer to 

EM-18, "INTAKE MANIFOLD COLLECTOR"

 .

2.

Remove air cleaner case and air duct. Refer to 

EM-16, "AIR CLEANER AND AIR DUCT"

 .

3.

Remove undercover with power tool.

4.

Drain engine coolant. Refer to 

CO-10, "Changing Engine Coolant"

 .

CAUTION:

●

Perform this step when engine is cold.

●

Do not spill engine coolant on drive belts.

1.

Heated oxygen sensor 2 (bank 1)

2.

Three way catalyst (right bank)

3.

Gasket

4.

Air fuel ratio sensor 1 (bank 1)

5.

Exhaust manifold cover (right bank)

6.

Exhaust manifold (right bank)

7.

Exhaust manifold (left bank)

8.

Exhaust manifold cover (left bank)

9.

Three way catalyst (left bank)

10. Air fuel ratio sensor 1 (bank 2)

11. Heated oxygen sensor 2 (bank 2)

PBIC3103E

EM-26

EXHAUST MANIFOLD AND THREE WAY CATALYST

5.

Disconnect harness connector and remove heated oxygen sen-
sor 2 on both banks using heated oxygen sensor wrench (SST).

CAUTION:

●

Be careful not to damage heated oxygen sensor 2.

●

Discard any heated oxygen sensor 2 which has been
dropped onto a hard surface such as a concrete floor.
Replace with a new sensor.

6.

Remove exhaust mounting bracket between three way catalyst (right and left bank) and transmission.
Refer to 

EX-3, "EXHAUST SYSTEM"

 .

7.

Remove three way catalyst.

8.

Disconnect harness connector and remove air fuel ratio sensor
1 on both banks using heated oxygen sensor wrench (SST).

CAUTION:

●

Be careful not to damage air fuel ratio sensor 1.

●

Discard any air fuel ratio sensor 1 which has been
dropped onto a hard surface such as a concrete floor.
Replace with a new sensor.

9.

Remove water pipe and heater pipe on both right and left side. Refer to 

CO-30, "WATER OUTLET AND

WATER PIPING"

 .

10. Remove exhaust manifold cover.

11. Loosen nuts in reverse order as shown in the figure to remove

exhaust manifold with power tool.

NOTE:
Disregard the numerical order No. 7 and No. 8 in removal.

12. Remove exhaust manifold gaskets.

PBIC2298E

PBIC2299E

PBIC2042E