Infiniti FX35 / FX45. Manual - part 626

INTAKE MANIFOLD COLLECTOR

EM-21

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8.

Loosen mounting bolts in reverse order of illustration to remove
intake manifold collector (upper) with power tool.

9.

Remove PCV hose [between intake manifold collector (lower) and rocker cover (right bank)].

10. Loosen mounting bolts in reverse order as shown in the figure,

and remove intake manifold collector cover, gasket, intake man-
ifold collector (lower) and gasket with power tool.

CAUTION:

Cover engine openings to avoid entry of foreign materials.

INSPECTION AFTER REMOVAL

Surface Distortion

• Check the surface distortion of both the intake manifold collector

(upper and lower) mating surfaces with a straightedge and a feeler
gauge.

• If it exceeds the limit, replace intake manifold collector (upper and/

or lower).

INSTALLATION

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

Part Installation Direction

PBIC0773E

PBIC0774E

Limit

: 0.1 mm (0.004 in)

PBIC0775E

EM-22

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INTAKE MANIFOLD COLLECTOR

Referring to front marks, install parts shown in figure.

Intake Manifold Collector (Lower)

Tighten mounting bolts in numerical order as shown in the figure.
NOTE:
Tighten mounting bolts to secure gasket (lower), intake manifold col-
lector (lower), gasket (upper), and intake manifold collector cover.

Intake Manifold Collector (Upper)

• If stud bolts were removed, install them and tighten to the specifiedtorque below.

• Shank length under bolt head varies with bolt location. Install

mounting bolts while referring to numbers shown below and in the
figure. (Bolt length does not include pilot portion.)

• Tighten mounting bolts in numerical order as shown in the figure.

Water Hose

• Insert hose by 27 to 32 mm (1.06 to 1.26 in) from connector end.
• Clamp hose at location of 3 to 7 mm (0.12 to 0.28 in) from hose end.

Electric Throttle Control Actuator 

• Install gasket with positioning no-protrusion surface upward or downward.

PBIC0776E

PBIC0774E

 : 5.9 N·m (0.6 kg-m, 52 in-lb)

Bolt

M6 

×

 25 mm (0.98 in)

: 7, 8, 10, 11, 13, 14, 15, 16, 18

M6 

×

 45 mm (1.77 in)

: 2, 4, 5

M6 

×

 60 mm (2.36 in)

: 1, 3, 6, 9

M6 Nut

: 12, 17

PBIC0773E

INTAKE MANIFOLD COLLECTOR

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• Tighten in numerical order as shown in the figure.
• Perform the “Throttle Valve Closed Position Learning” when har-

ness connector of electric throttle control actuator is disconnected.
Refer to 

EC-85, "Throttle Valve Closed Position Learning"

.

• Perform the “Idle Air Volume Learning” and “Throttle Valve Closed

Position Learning” when electric throttle control actuator is
replaced. Refer to 

EC-85, "Idle Air Volume Learning"

.

KBIA0957E

EM-24

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INTAKE MANIFOLD

INTAKE MANIFOLD

Component

INFOID:0000000001325712

Removal and Installation

INFOID:0000000001325713

REMOVAL

1.

Release fuel pressure. Refer to 

EC-87, "Fuel Pressure Check"

.

2.

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

EM-19, "Component"

.

3.

Remove fuel tube and fuel injector assembly. Refer to 

EM-45, "Component"

.

4.

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

5.

Remove gaskets.

CAUTION:

Cover engine openings to avoid entry of foreign materials.

INSPECTION AFTER REMOVAL

Surface Distortion

1.

Harness bracket

2.

Intake manifold

3.

Gasket

SBIA0487E

PBIC0778E