Infiniti FX35 / FX45. Manual - part 633

FUEL INJECTOR AND FUEL TUBE

EM-49

< SERVICE INFORMATION >

[VQ35DE]

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• Tighten mounting bolts in two steps in numerical order as

shown in the figure.

6.

Connect injector sub-harness.

7.

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

EM-19, "Component"

.

8.

Install fuel sub-tube on rear end of intake manifold collector (lower).

9.

Connect fuel feed hose (with damper).
• Handling procedure of O-ring is the same as that of fuel damper and fuel sub-tube.
• Insert fuel damper straight into fuel sub-tube.
• Tighten mounting bolts evenly in turn.
• After tightening mounting bolts, make sure that there is no gap between flange and fuel sub-tube.

10. Connect quick connector between fuel feed hose (with damper) and centralized under-floor piping con-

nection as follows:

a.

Make sure no foreign substances are deposited in and around centralized under-floor piping and quick
connector, and no damage on them.

b.

Thinly apply new engine oil around centralized under-floor piping from tip end to spool end.

c.

Align center to insert quick connector straightly into centralized under-floor piping.
• Insert quick connector to centralized under-floor piping until

top spool is completely inside quick connector, and 2nd level
spool exposes right below quick connector.

CAUTION:

• Hold “A” position as shown in the figure when inserting

centralized under-floor piping into quick connector.

• Carefully align center to avoid inclined insertion to pre-

vent damage to O-ring inside quick connector.

• Insert until you hear a “click” sound and actually feel the

engagement.

• To avoid misidentification of engagement with a similar

sound, be sure to perform the next step.

d.

Pull quick connector by hand holding “A” position. Make sure it is completely engaged (connected) so that
it does not come out from centralized under-floor piping.

e.

Install quick connector cap to quick connector connection.
• Install quick connector cap with arrow on surface facing in

direction of quick connector (fuel feed hose side).

CAUTION:

If quick connector cap cannot be installed smoothly, quick
connector may have not been installed correctly. Check the
connection again.

11. Install in the reverse order of removal after this step.

INSPECTION AFTER INSTALLATION

Check on Fuel Leakage

1.

Turn ignition switch “ON” (with the engine stopped). With fuel pressure applied to fuel piping, make sure
there are no fuel leaks at connection points.

 1st step

: 10.1 N·m (1.0 kg-m, 7 ft-lb)

 2nd step

: 23.6 N·m (2.4 kg-m, 17 ft-lb)

KBIA1296E

PBIC2471E

KBIA1298E

EM-50

< SERVICE INFORMATION >

[VQ35DE]

FUEL INJECTOR AND FUEL TUBE

NOTE:
Use mirrors for checking at points out of clear sight.

2.

Start the engine. With engine speed increased, make sure again that there are no fuel leaks at connection
points.

CAUTION:

Do not touch the engine immediately after stopped, as the engine becomes extremely hot.

ROCKER COVER

EM-51

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ROCKER COVER

Component

INFOID:0000000001325726

Removal and Installation

INFOID:0000000001325727

REMOVAL

1.

Remove engine cover with power tool. Refer to 

EM-19, "Component"

.

2.

Release the fuel pressure. Refer to 

EC-87, "Fuel Pressure Check"

.

3.

Drain engine coolant, or when water hoses are disconnected, attach plug to prevent engine coolant leak-
age. Refer to 

CO-10, "Changing Engine Coolant"

 and 

EM-19, "Component"

.

CAUTION:

Perform this step when the engine is cold.

4.

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

EM-19, "Component"

.

5.

Separate engine harness removing their brackets from rocker covers.

6.

Remove ignition coil. Refer to 

EM-42, "Component"

.

7.

Remove PCV hoses from rocker covers.

8.

Remove PCV valve and O-ring from rocker cover (right bank), if necessary.

9.

Remove oil filler cap and oil catcher from rocker cover (left bank), if necessary.

1.

PCV hose

2.

Oil filler cap

3.

Oil catcher

4.

Rocker cover (right bank)

5.

PCV control valve

6.

O-ring

7.

Rocker cover gasket

8.

Rocker cover (left bank)

PBIC2303E

EM-52

< SERVICE INFORMATION >

[VQ35DE]

ROCKER COVER

10. Loosen mounting bolts with power tool in reverse order as

shown in the figure.

11. Remove rocker cover gaskets from rocker covers.
12. Use a scraper to remove all trances of liquid gasket from cylinder head and camshaft bracket (No. 1).

CAUTION:

Do not scratch or damage the mating surface when cleaning off old liquid gasket.

INSTALLATION

1.

Apply liquid gasket with the tube presser (commercial service
tool) to joint part among rocker cover, cylinder head and cam-
shaft bracket (No. 1) as follows:
Use Genuine RTV Silicone Sealant or equivalent. Refer to

GI-44, "Recommended Chemical Product and Sealant"

.

NOTE:
The figure shows an example of left bank side [zoomed in shows
camshaft bracket (No. 1)].

a.

Refer to the figure “a” to apply liquid gasket to joint part of cam-
shaft bracket (No. 1) and cylinder head.

b.

Refer to the figure “b” to apply liquid gasket to the figure “a”
squarely.

2.

Install new rocker cover gasket to rocker cover.

3.

Install rocker cover.
• Check if rocker cover gasket is not dropped from installation groove of rocker cover.

KBIA0985E

PBIC2474E