Daewoo Matiz (2003 year). Manual - part 99

1F – 306  ENGINE CONTROLS

D102F508

2. Remove the fuel pressure regulator from the fuel

pump.

D

Remove the retainer from the fuel pump assembly
(1).

D

Remove the fuel pressure regulator (2).

D

Check the O–ring seals for the damage or the rip.

D

Use a vacuum gauge to check the diaphram for
damage and the spring for operation.

D102F509

Installation Procedure

1. Install in the reverse order of removal.

D

Do not reuse the removed O–ring seals. Replace
the removed O–ring seals with the new ones.

D102F511

D102F510

FUEL FILTER

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 pres-
sure before disconnecting the fuel lines.

1. Relieve the fuel system pressure. 

Refer to “Fuel Pump” in this section.

2. Remove the fuel filter from the fuel tank.

D

Disconnect the inlet/outlet fuel lines by pushing the
line connector lock and pulling off the hose of the
fuel filter tube (1).

D

Remove the screw from the retaining clamp (2).

D

Remove the fuel filter (3).

ENGINE CONTROLS  1F – 307

D102F512

Installation Procedure

1. Install in the reverse order of removal.

D

Install the new fuel filter into the retaining clamp.
Note the flow direction.

D

Connect the inlet/outlet lines. Secure the lines with
the connector lock.

D

Perform a leak test of the fuel filter.

D102F514

D102F513

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 pres-
sure before disconnecting the fuel lines.

1. Relieve the fuel system pressure. 

Refer to “Fuel Pump” in this section.

2. Disconnect the fuel tank ventilation tube.

D

Disconnect the clamp (1).

D

Disconnect the ventilation tube (2).

3. Drain the fuel tank.

D

Place a pan below the fuel tank to catch the drain-
ing fuel.

D

Disconnect the fuel tank filter tube (1).

D

Drain the fuel from the fuel tank using the ventila-
tion tube joint port (2).

D

Disconnect the evaporative emission canister line
(3).

D12F515A

4. Remove the fuel filter. Refer to “Fuel Filter” in this

section.

5. Install the jack to remove the fuel tank.

D

Install the jack on the center of the fuel tank.

D

Remove the strap bolts (1).

D

Remove the straps (2).

1F – 308  ENGINE CONTROLS

D102F516

6. Remove the fuel tank.

D

Lower slowly the jack to remove the fuel tank easi-
ly (1).

D

Disconnect the canister hose which is connected
to the roll over valve from the fuel tank removed
(2).

D

Inspect the fuel tank for clacks, damages, and con-
taminations.

D

Inspect the fuel lines for cracks and damages.

D12F517A

Installation Procedure

1. Install in the reverse order of removal.

D

After the installation is complete, start the engine
to prevent the vapor lock and check the hoses for
leaks.

2. Install the fuel tank strap bolts.

Tighten

Tighten the fuel tank strap bolts to 18–22 N

S

m (13–16

lb-ft).

D102F519

D102F518

FUEL RAIL AND INJECTORS

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 pres-
sure before disconnecting the fuel lines.

1. Relieve the fuel system pressure. 

Refer to “Fuel Pump” in this section.

2. Remove the canister from the engine room. Refer to

“Evaporative Emission Canister” in this section.

3. Disconnect the fuel inlet line (1).

4. Disconnect the fuel injector harness connectors (2).

ENGINE CONTROLS  1F – 309

D102F520

5. Remove the fuel rail with the fuel injectors attached.

D

Remove the bolts (1).

D

Remove the fuel rail with the fuel injectors attached
(2).

Notice: Before removal, the fuel rail assembly may be
cleaned with a spray–type cleaner, following package in-
structions. Do not immerse the fuel rails in liquid clean-
ing solvent. Use care in removing the fuel rail assembly
to prevent damage to the electrical connectors and the
injector spray tips. Prevent dirt and other contaminants
from entering open lines and passages. Fittings should
be capped and holes plugged during service.

D102F521

6. Remove the injectors from the fuel rail.

D

Remove the fuel injector retainer clips (1).

D

Remove the fuel injectors by pulling them down
and out (2).

D

Discard the fuel injector O–rings (3).

Important: Different fuel injectors are calibrated for dif-
ferent flow rates. When ordering new fuel injectors, be
certain to order the identical part number that is in-
scribed on the old fuel injector.

D12F522A

18–22 N

S

m

Installation Procedure

1. Install in the reverse order of removal.
Important: If a fuel injector becomes separated from
the fuel rail and remains in the cylinder head, replace the
fuel injector O–ring seals and the retaining clip.

D

Lubricate the new fuel injector O–rings with engine
oil. Install the new O–rings on the fuel injectors.

2. Install the fuel rail retaining bolts.

Tighten

Tighten the fuel rail retaining bolts to 18–22 N

S

m

(13–16 lb-ft).

3. Perform a leak check of the fuel rail and the fuel injec-

tors.

MAA1F400

EVAPORATIVE EMISSION CANISTER

Removal Procedure

Caution: Canister and vacuum hoses contain fuel
vapors. Do not smoke in the area or permit an open
flame.

1. Disconnect the negative battery cable.

2. Remove the canister.

D

Remove the bolt (1).

D

Remove the nut, then remove the cover (2).