Nissan March K13. Manual - part 276

EM-38

< REMOVAL AND INSTALLATION >

[HR12DE]

FUEL INJECTOR AND FUEL TUBE

Disconnect fuel feed hose from hose clamp.

Disengage (C) and pull up (B) the pawl (A) of the quick connec-
tor retainer (3) by hand to disconnect quick connector (2) from
the fuel tube.
NOTE:
If the fuel tube connector is stuck, hold the fuel pipe by hand and
disconnect it by pushing and pulling.

CAUTION:

• Never pull with lateral force applied. O-ring inside quick

connector may be damaged.

• Prepare container and cloth beforehand as fuel will leak-

age out.

• Avoid fire and sparks.
• 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 bend or twist connection between quick connector and fuel feed tube during installation/

removal.

• To keep clean the connecting portion and to avoid dam-

age and foreign materials, cover them completely with
plastic bags, etc. (A) or something similar.

Disconnect harness connector from fuel injector.

Remove fuel tube protector.
• Loosen mounting bolts in reverse order as shown in the figure.

Remove fuel tube and fuel injector assembly.

CAUTION:

• When removing, be careful to avoid any interference with fuel injector.
• Use a shop cloth to absorb any fuel leakage from fuel tube.

Remove fuel injector from fuel tube with the following procedure:

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: Engine front

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FUEL INJECTOR AND FUEL TUBE

EM-39

< REMOVAL AND INSTALLATION >

[HR12DE]

Open and remove clip (2).

Remove fuel injector (3) from fuel tube (1) by pulling straight.

CAUTION:

• Be careful with remaining fuel that may go out from fuel

tube.

• Be careful not to damage fuel injector nozzle during

removal.

• Never bump or drop fuel injector.
• Never disassemble fuel injector.

INSTALLATION

Note the following, and install O-rings to fuel injector.

CAUTION:

• Upper and lower O-rings are different. Be careful not to confuse them.

• 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 is stretched while installing, never insert it quickly into fuel tube.

• Insert O-ring straight into fuel tube. Never decenter or twist it.

Install fuel injector to fuel tube with the following procedure:

Insert clip (2) into clip mounting groove on fuel injector (4).

• Insert clip so that protrusion (F) of fuel injector matches cut-out

(D) of clip.

CAUTION:

• Never reuse clip. Replace it with a new one.
• Be careful to keep clip from interfering with O-ring. If

interference occurs, replace O-ring.

Insert fuel injector into fuel tube (1) with clip attached.
• Insert it while matching it to the axial center.
• Insert fuel injector so that protrusion (B) of fuel tube matches

cut-out (C) of clip.

• Check that fuel tube flange (A) is securely fixed in flange fixing

groove (E) on clip.

Check that installation is complete by checking that fuel injector
does not rotate or come off.

Set fuel tube and fuel injector assembly at its position for installation on cylinder head.

CAUTION:

For installation, be careful not to interfere with fuel injector nozzle.

Install fuel tube and injector assembly onto cylinder.

Install fuel tube protector.

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Fuel tube side

: Black

Nozzle side

: Green

: O-ring (black)

: O-ring (green)

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EM-40

< REMOVAL AND INSTALLATION >

[HR12DE]

FUEL INJECTOR AND FUEL TUBE

• After temporary tightening of bolts (3), tighten mounting bolts

in numerical order as shown in the figure.

Connect harness connector to fuel injector.

Connect fuel feed tube with the following procedure.

Align the axes of the quick connector and the fuel tube to press
into the quick connector (A). Press down (B) the retainer (1).
NOTE:
If the connection is firm, apply a tiny amount of engine oil to the
tip of the fuel pipe.

After connecting the fuel tube, pull it to check for secure connec-
tion.

CAUTION:

• 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.

Install fuel feed hose to hose clamp.

Install fuel tube protector.

Install remaining parts in the reverse order of removal.

Inspection

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INSPECTION AFTER INSTALLATION

Check on Fuel Leakage

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

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

CAUTION:

Never touch the engine immediately after stopped, as the engine becomes extremely hot.

: Engine front

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