Nissan Qashqai J11. Manual — part 56

HIGH PRESSURE FUEL PUMP AND FUEL HOSE

EM-163

< REMOVAL AND INSTALLATION >

[MR20DD]

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a.

Temporarily tighten flare nut

and

of fuel tube

until

seated.

CAUTION:

When temporarily tightening flare nut, place pipe in the cen-
ter of the nut inner diameter.

b.

Temporarily tighten bolt

until the seat of bracket is seated.

c.

Tighten flare nut

and

in alphabetical order.

CAUTION:

Always fit the tool completely with the nut.

d.

Tighten bolt

.

5.

Install in the reverse order of removal after this step.

Inspection

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INSPECTION AFTER INSTALLATION

Check for Fuel Leakage

1.

Turn ignition switch “ON” (with the engine stopped). With fuel pressure applied to fuel piping, check that
there is no fuel leakage at connection points.
NOTE:
Use mirrors for checking at points out of clear sight.

2.

Start the engine. With engine speed increased, check again that there is no fuel leakage at connection
points.

CAUTION:

Never touch the engine immediately after it is stopped because the engine is extremely hot.

: High pressure fuel pump

: Fuel rail connector

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EM-164

< REMOVAL AND INSTALLATION >

[MR20DD]

FUEL INJECTOR AND FUEL TUBE

FUEL INJECTOR AND FUEL TUBE

Exploded View

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CAUTION:

• Never remove or disassemble parts unless instructed as shown in the figure.

Removal and Installation

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WARNING:

• Be sure to read

EM-124, "Precaution for Handling High Pressure Fuel System"

when working on the

high pressure fuel system.

• 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.

Holder

Seal ring (white)

Backup ring

O-ring (blue)

Fuel injector

Stud bolt

Fuel rail

Fuel rail insulator

Fuel rail cover

Fuel pressure sensor

Gasket

To fuel rail connector and fuel tube.
Refer to

EM-159

.

Comply with the assembly procedure
when tightening. Refer to

EM-164

: N·m (kg-m, ft-lb)

: N·m (kg-m, in-lb)

: Always replace after every disassembly.

: Should be lubricated with oil.

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FUEL INJECTOR AND FUEL TUBE

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

REMOVAL

1.

Release the fuel pressure. Refer to

ECM-135, "Work Procedure"

.

2.

Remove oil level gauge. Refer to

EM-222, "Exploded View"

.

3.

Remove intake manifold. Refer to

EM-149, "Exploded View"

.

4.

Remove alternator. Refer to

CHG-52, "MR20DD : Exploded View"

.

5.

Remove oil level gauge guide. Refer to

EM-222, "Exploded View"

.

6.

Remove fuel rail cover, and then remove fuel rail insulator.

7.

Remove fuel tube and fuel rail connector. Refer to

EM-159, "Exploded View"

.

8.

Disconnect fuel pressure sensor harness connector.

9.

Disconnect fuel injector harness connector.

10. Remove fuel pressure sensor, if necessary.
11. Remove fuel rail.

• Loosen mounting bolts in reverse order as shown in the figure.

CAUTION:

• When removing, be careful to avoid any interference with fuel

injector.

• Use a shop cloth to absorb any fuel leakage from fuel rail.

12. Remove fuel injector from cylinder head as per the following.

CAUTION:

• Be careful with remaining fuel that may go out from fuel rail.
• Be careful not to damage injector nozzles during removal.
• Never bump or drop fuel injector.
• Never disassemble fuel injector.

a.

Remove injector holder.

b.

Install an remover [SST: KV10119600 (—)] (A) to the injector
connector side so that cutout

of injector remover faces the

injector connector side.

• Hook pawl portion

of injector remover [SST: KV10119600

(—)] (A) to groove portion

of injector

: Engine front

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EM-166

< REMOVAL AND INSTALLATION >

[MR20DD]

FUEL INJECTOR AND FUEL TUBE

c.

Press down body portion of injector remover [SST: KV10119600
(—)] (A) until it contacts cylinder head.

d.

Tighten injector remover [SST: KV10119600 (—)] clockwise and
remove injector from cylinder head.

e.

Cut seal ring

while pinching it. Be careful not to damage injec-

tor.

INSTALLATION

CAUTION:

Do not reuse O-rings.

1.

Install seal ring to fuel injector as per the following:

CAUTION:

• Handle seal ring with bare hands. Never wear gloves.
• Never apply engine oil to seal ring.
• Never clean seal ring with solvent.

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