Nissan Juke Service and Repair Manual : High pressure fuel pump and fuel hose

Exploded View

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

1. High pressure fuel pump insulator


1. High pressure fuel pump insulator 2. High pressure fuel pump 3. O-ring
4. Valve lifter
5. Fuel tube assembly
6. Bracket
7. Fuel pump connector protector 8. Fuel feed hose

A. To centralized under-floor piping B. To fuel tube assembly

: Nm (kg-m, ft-lb): Engine front
: Nm (kg-m, in-lb): Nm (kg-m, ft-lb)
: Always replace after every: Nm (kg-m, in-lb)
disassembly.: Always replace after every
disassembly.

Removal and Installation

REMOVAL

WARNING:
Be sure to read EM-7, "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 CO2 fire extinguisher.

Never smoke while servicing fuel system. Keep open flames and sparks away from the work area.

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

1. Release fuel pressure. Refer to EC-140, "Work Procedure".

2. Remove engine cover. Refer toEM-25, "Exploded View".

3. Remove fuel pump connector protector, and remove high pressure fuel pump insulator.

4. Disconnect harness connector (A) with the following procedure.

a. Disconnect fuel feed hose (1) from clamp (2).

b. Disengage (A) and pull up (B) the pawl of the fuel feed hose


b. Disengage (A) and pull up (B) the pawl of the fuel feed hose conector retainer (C) to disconnect the fuel feed tube from high pressure fuel pump.

NOTE

:
If the fuel feed hose is stuck, hold the fuel pipe by hand and disconnect it by pusing and pulling.

CAUTION:
Keep parts away from heat source. Especially, be careful when welding is performed around them.

Never expose parts to battery electrolyte or other acids.

Never bent or twist connection between quick connector and fuel feed hose (with damper) during installation/ removal.

Pull quick connector holding (D).

Do not remove the retainer.

Prepare container and colth beforehand as fuel will leak out.

Never pull with lateral force applied. O-ring inside quick connector may be damaged.

Retainer color : Red

 To keep clean the connecting portion and to avoid damage


To keep clean the connecting portion and to avoid damage and foreign materials, cover them completely with plastic bags (A), etc. or a similar item.

5. Remove intake manifold. Refer to EM-29, "Removal and Installation".


5. Remove intake manifold. Refer to EM-29, "Removal and Installation".

6. Remove fuel feed tube.

7. Remove high pressure fuel pump and lifter.

INSTALLATION

1. Install high pressure pump with the following procedure.

a. Check the orientation of oil pump cam from the mounting area (view arrow) of high pressure fuel pump.

b. Aim oil pump cam at the BTC area (arrow position).


b. Aim oil pump cam at the BTC area (arrow position).

1 : Camshaft (EXH)

NOTE

:
For BTC area, anywhere whithin the area indicated by arrow can be accepted.

c. Install O-ring to high pressure fuel pump. When handing new O-ring, paying


c. Install O-ring to high pressure fuel pump. When handing new O-ring, paying attention to the following caution items: CAUTION:
Handle O-ring with bare hands. Never wear gloves.

Lubricate O-ring with new engine oil.

Never clean O-ring with solvent.

Check that O-ring and its mating part are free of foreign material.

When installing O-ring, be careful not to scratch it with tool or fingernails. Also be careful not to twist or stretch O-ring. If O-ring was stretched while it was being attached, never insert it quickly into fuel tube.

Insert new O-ring straight into fuel rail. Never decenter or twist it.

d. Install valve lifter.

e. Apply oil to the fitting area of high pressure O-ring and cam shaft bracket side to install high pressure pump.

2. Connect fuel feed hose with the following procedure, and them install the fuel feed hose.

a. Check no foreign substances are deposited in and around matching pipe and quick connector.

b. Quick connector shall be inserted gradually, aligning with the axis of the matching pipe.

c. Insert the retainer until it clicks and check the retainer is locked.

After insertion, pull the connector and check that the connector is locked.

A : Lock position
B : Unlock position

CAUTION: If retainer cannot be installed smoothly, quick connector may be have not been installed correctly. Check connection again.

d. After attaching the quick connector and fix the hose to the clamp.


d. After attaching the quick connector and fix the hose to the clamp.

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

Inspection

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.

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