Infiniti M45 (Y34). Manual - part 520

AIR CLEANER AND AIR DUCT

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CHANGING AIR CLEANER FILTER
Removal

1.

Unfasten two clips and lift up air cleaner filter along with holder.

2.

Remove air cleaner filter from holder.

Installation

Install in the reverse order of removal.

EM-18

INTAKE MANIFOLD

INTAKE MANIFOLD

PFP:14003

Removal and Installation

ABS000LM

REMOVAL

WARNING:

To avoid the danger of being scalded, never drain engine coolant when engine is hot.

1.

PCV tube

2.

Engine cover rear bracket

3.

EVAP canister purge volume con-
trol solenoid valve

4.

EVAP hose

5.

EVAP tube

6.

EVAP hose

7.

Vacuum gallery

8.

Engine cover front bracket

9.

Vacuum tank

10.

VIAS control solenoid valve

11.

Water gallery

12.

Gasket

13.

Intake manifold lower

14.

Gasket

15.

Water hose

16.

Intake manifold adapter

17.

Electric throttle control actuator

18.

Gasket

19.

Intake manifold upper

20.

Bracket

PBIC2744E

INTAKE MANIFOLD

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1.

Remove engine cover (with power tool).
Refer to 

EM-12, "Removal and Installation"

 .

2.

Release fuel pressure.
Refer to 

EC-46, "FUEL PRESSURE RELEASE"

 .

3.

Remove air cleaner case and air duct assembly.
Refer to 

EM-16, "Removal and Installation"

 .

4.

Drain engine coolant when engine is cooled. Refer to 

CO-9, "Changing Engine Coolant"

 .

5.

Disconnect fuel tube quick connector on engine side. Refer to 

EM-31, "FUEL INJECTOR AND FUEL

TUBE"

 .

6.

Remove accelerator wire from throttle drum. Refer to 

ACC-2, "Removal and Installation"

 .

7.

Move cooling fan fluid reservoir tank. Refer to 

CO-19, "COOLING FAN"

 .

8.

Remove or disconnect intake manifold upper, wiring harnesses, brackets, vacuum hose, vacuum gallery
and PCV hose and tube.

9.

Remove electric throttle control actuator and intake manifold adapter loosening fixing bolts diagonally.

CAUTION:

●

Handle carefully to avoid any shock to the electric throttle control actuator.

●

Do not disassemble.

10. Disconnect water hoses.

11. Loosen bolts in reverse order of illustration to remove intake

manifold upper with power tool.

12. Remove fuel injectors and fuel tube (left and right). Refer to 

EM-31, "Removal and Installation"

 .

13. Loosen bolts in reverse order of illustration to remove intake

manifold lower with power tool.

CAUTION:

Cover engine openings to avoid entry of foreign materials.

14. Remove intake manifold gaskets.

PBIC0014E

PBIC0015E

EM-20

INTAKE MANIFOLD

INSPECTION AFTER REMOVAL
Surface Distortion

●

Using straightedge and feeler gauge, inspect surface distortion
of intake manifold lower and intake manifold upper.

●

If it exceeds the limit, replace intake manifold lower or intake
manifold upper.

INSTALLATION

●

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

Tightening Intake Manifold Lower Bolts

●

Tighten in numerical order as shown in the figure.
NOTE:
No.7 and 8 have longer bolt length than others.

Tightening Intake Manifold Upper Bolts

●

Tighten in numerical order as shown in the figure.

NOTE:
No.4 to 7 have longer bolt length than others.

Installation of Electric Throttle Control Actuator

●

Install intake manifold adapter gasket and electric throttle control actuator gasket so that three protrusions
for installation identification do not face downward.

●

Tighten fixing bolts of electric throttle control actuator equally and diagonally in several steps.

●

After installation perform procedure in 

EM-20, "INSPECTION AFTER INSTALLATION"

 .

Connecting Water Hose

Install water hose so that its overlap width for connection is between 27 mm (1.06 in) and 32 mm (1.26 in) (tar-
get: 27 mm, 1.06 in).

Connecting Vacuum Tube

Refer to 

EC-24, "Vacuum Hose Drawing"

 .

INSPECTION AFTER INSTALLATION

●

After installing fuel tubes, make sure there is no fuel leakage at connections in the following steps.

Standard

: 0.1 mm (0.004 in)

PBIC0016E

PBIC0015E

PBIC0014E