Daewoo Nubira. Manual - part 130

ENGINE CONTROLS  1F – 377

DAEWOO V–121 BL4

MAINTENANCE AND REPAIR

ON–VEHICLE SERVICE

FUEL TANK

Removal Procedure

CAUTION : The fuel system is under pressure. To
avoid fuel spillage and the risk of personal injury or
fire, it is necessary to relieve the fuel system pressure
before disconnecting the fuel lines.

1.  Relieve the fuel pressure. Refer to ” Fuel System

Pressure Relief ” in this section.

2.  Disconnect the negative battery cable.
3.  Drain the fuel tank.
4.  Disconnect the right rear parking brake cable from

the retaining bracket attached to the right side fuel
tank strap.

5.  Remove the fuel tank filler tube clamp at the fuel

tank.

6.  Disconnect the fuel tank filler tube.
7.  Disconnect the fuel tank vent tube at the fuel tank.
8.  Disconnect the fuel vapor line near the fuel tank

filler tube.

9.  Disconnect the fuel pump harness connector near

the left rear corner of the fuel tank.

10.  Disconnect the fuel inlet line and the fuel return line

near the right front of the fuel tank.

11.  Disconnect the wiring harness clips and the fuel line

clips as needed.

1F – 378

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ENGINE CONTROLS

DAEWOO V–121 BL4

12.  Support the fuel tank.
13.  Remove the fuel tank strap retaining nuts.
14.  Remove the fuel tank straps.
15.  Carefully lower the fuel tank.
16.  Remove the fuel tank.
17.  Transfer any parts as needed.

Installation Procedure

1.  Raise the fuel tank into position.
2.  Install the fuel tank straps.
3.  Install the fuel tank strap retaining nuts.

Tighten

Tighten the fuel tank strap retaining nuts to 13 N

S

m

(115 lb–ft).

4.  Connect the fuel outlet line and the fuel return line.
5.  Connect the wiring harness clips and the fuel line

clips as needed.

6.  Connect the fuel pump harness connector.
7.  Connect the fuel vapor line.
8.  Connect the fuel tank filler tube.
9.  Connect the fuel tank vent tube.
10.  Install the fuel tank filler tube clamp at the fuel tank.

11.  Connect the right rear parking brake cable to the

retaining bracket attached to the right side fuel tank
strap.

12.  Connect the negative battery cable.
13.  Fill the fuel tank.
14.  Perform a leak check of the fuel tank and the fuel

line connections.

ENGINE CONTROLS  1F – 379

DAEWOO V–121 BL4

FUEL PUMP

Removal Procedure

CAUTION : The fuel system is under pressure. To
avoid fuel spillage and the risk of personal injury or
fire, it is necessary to relieve the fuel system pressure
before disconnecting the fuel lines.

1.  Relieve the fuel system pressure.

1) Remove the fuel cap.
2) Remove fuel pump fuse EF18 from the engine

fuse block.

3) Start the engine and allow the engine to stall.
4) Crank the engine foran additional 10 seconds.

2.  Disconnect the negative battery cable.
3.  Remove the rear seat. Refer to Section 9H, Seats.
4.  Remove the fuel pump access cover.
5.  Disconnect the electrical connector at the fuel

pump assembly.

6.  Disconnect the fuel outlet line.
7.  Disconnect the fuel tank return line.
8.  Turn the lock ring counterclockwise to clear the

tank tabs.

9.  Remove the fuel pump assembly from the tank.
10.  Remove and discard the gasket.

Installation Procedure

1.  Clean the gasket mating surface on the fuel tank.
2.  Position the new gasket in place.
3.  Install the fuel pump into the fuel tank in the same

location as removed for ease of line and connector
installation.

4.  Position the lock ring in place and turn it clockwise

until it contacts the tank stop.

5.  Connect the fuel pump assembly connector.
6.  Install the fuel pump outlet line.
7.  Install the fuel tank return line.
8.  Install the fuel pump access cover.
9.  Connect the negative battery cable.
10.  Perform an operational check of the fuel pump.
11.  Install the rear seat. Refer to Section 9H, Seats.

1F – 380

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ENGINE CONTROLS

DAEWOO V–121 BL4

FUEL TANK PRESSURE SENSOR

Removal Procedure

CAUTION : The fuel system is under pressure. To
avoid fuel spillage and risk of personal injury or fire,
it is necessary to relieve the fuel system pressure be-
fore disconnecting the fuel lines.

1.  Relieve the fuel pressure. Refer to ” Fuel System

Pressure Relief ”in this section.

2.  Disconnect the negative battery cable.
3.  Remove the rear seat. Refer to Section 9H, Seats.
4.  Remove the fuel pump access cover.

5.  Disconnect the fuel tank pressure sensor electrical

connector.

6.  Bend the retaining tabs and remove the fuel tank

pressure sensor.

Installation Procedure

1.  Install the fuel tank pressure sensor and bend the

retaining tabs into place.

2.  Connect the fuel tank pressure sensor electrical

connector.