2003 DAEWOO MATIZ fuel filter

1F–294 ENGINE CONTROLS
DAEWOO M-150 BL2
CUTS OUT, MISSES
Definition: Steady pulsation or jerking that follows en-
gine speed, usually more pronounced as engine load in-creases. The exhaust has a steady spitting sound at idle
or low speed.
StepActionValue(s)YesNo
1
Were the Important Preliminary Checks performed?
–
Go to Step 2
Go to
“Important
Preliminary
Checks”
2
Check the ignition system voltage output for all of
the cylinders using a spark tester.
Is spark present on all of the cylinders?
–
Go to Step 3
Go to “Ignition
System Check”
3
1. Inspect the spark plugs for excessive wear,
insulation cracks, improper gap, or heavy
deposits.
2. Check the resistance of the ignition wires.
Replace any ignition wires that have a resistance
greater than the value specified.
Is the problem found?
30000 ΩGo to Step 4Go to Step 5
4Repair or replace any components as needed.
Is the repair complete?–System OK–
5
With the engine running, spray the ignition wires with
a fine water mist to check for arcing and shorting to
ground.
Is the problem found?
–
Go to Step 6Go to Step 7
6Replace the ignition wires.
Is the repair complete?–System OK–
7
1. Perform a cylinder compression test.
2. If the compression is low, repair the engine as
needed.
3. Inspect for proper valve timing, bent pushrods,
worn rocker arms, broken or weak valve springs,
and worn camshaft lobes.
4. Inspect the intake manifold and the exhaust
manifold passages for casting flash.
Is the problem found?
–
Go to Step 8Go to Step 9
8Repair or replace any components as needed.
Is the repair complete?–System OK–
9
1. Check the fuel system for a plugged in-line fuel
filter.
2. Check the fuel system for low fuel pressure. If the
fuel pressure is below the value specified, service
the fuel system as needed.
3. Inspect for contaminated fuel.
Is the problem found?
380 kPa
(55 psi)
Go to Step 10Go to Step 11
10Repair or replace any components as needed.
Is the repair complete?–System OK–
11
1. Disconnect all of the fuel injector harness
connectors at the fuel injectors.
2. Connect an injector test light to the harness
terminals of each fuel injector connector.
3. Note the test light while cranking the engine for
each fuel injector.
Does the test light blink for all of the fuel injectors?
–
Go to Step 13Go to Step 12

1F–296 ENGINE CONTROLS
DAEWOO M-150 BL2
POOR FUEL ECONOMY
Definition: Fuel economy, as measured by an actual
road test, is noticeably lower than expected. Also, fuel
economy is noticeably lower than it was on this vehicle
at one time, as previously shown by an actual road test.
Important: Driving habits affect fuel economy. Check
the owner’s driving habits by asking the following ques-
tions:1. Is the A/C system (i.e. defroster mode) turned on all
the time?
2. Are the tires at the correct air pressure?
3. Have excessively heavy loads been carried?
4. Does the driver accelerate too much and too often?
Suggest the driver read the section in the owner’s
manual about fuel economy.
StepActionValue(s)YesNo
1
Were the Important Preliminary Checks performed?
–
Go to Step 2
Go to
“Important
Preliminary
Checks”
2
1. Inspect the air filter for excessive contamination.
2. Inspect for fuel system leaks.
Are all needed checks complete?
–
Go to Step 3
–
3
1. Inspect the spark plugs for excessive wear,
insulation cracks, improper gap, or heavy
deposits.
2. Replace any faulty spark plugs.
3. Inspect the ignition wires for cracking, hardness,
and proper connections.
Are all needed checks and repairs complete?
–
Go to Step 4
–
4
1. Inspect the engine coolant level.
2. Check the thermostat for being always open or for
an incorrect heat range.
3. Replace the thermostat as needed.
Are all needed checks and repairs complete?
–
Go to Step 4
–
5
1. Check the transaxle shift pattern. Ensure all
transaxle gears are functioning.
2. Check for proper calibration of the speedometer.
3. Check the brakes for dragging.
4. Check the cylinder compression.
5. Repair, replace, or adjust any components as
needed.
Are all checks and needed repairs complete?
–
System OK
–

1F–306 ENGINE CONTROLS
DAEWOO M-150 BL2
D102F508
2. Remove the fuel pressure regulator from the fuel
pump.
Remove the retainer from the fuel pump assembly
(1).
Remove the fuel pressure regulator (2).
Check the O–ring seals for the damage or the rip.
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.
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.
Disconnect the inlet/outlet fuel lines by pushing the
line connector lock and pulling off the hose of the
fuel filter tube (1).
Remove the screw from the retaining clamp (2).
Remove the fuel filter (3).

ENGINE CONTROLS 1F–307
DAEWOO M-150 BL2
D102F512
Installation Procedure
1. Install in the reverse order of removal.
Install the new fuel filter into the retaining clamp.
Note the flow direction.
Connect the inlet/outlet lines. Secure the lines with
the connector lock.
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.
Disconnect the clamp (1).
Disconnect the ventilation tube (2).
3. Drain the fuel tank.
Place a pan below the fuel tank to catch the drain-
ing fuel.
Disconnect the fuel tank filter tube (1).
Drain the fuel from the fuel tank using the ventila-
tion tube joint port (2).
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.
Install the jack on the center of the fuel tank.
Remove the strap bolts (1).
Remove the straps (2).

4G–6 PARKING BRAKE
DAEWOO M-150 BL2
D107D508
PARKING BRAKE CABLE
Removal Procedure
1. Remove the parking brake lever. Refer to “Parking
Brake Lever” in this section.
2. Remove the parking brake cable.

Remove the cable pulley (1).

Loosen the adjustment nuts (2).

Remove the strengthener (3).
D107D509

Remove the grommet (4).
D107D510
3. Remove the rear brake drum assembly. Refer to Sec-
tion 2D, Rear Suspension.
4. Disconnect the parking brake cable from the rear
brake drum assembly.

Remove the clip from the brake plate (1).

Disconnect the parking brake cable from the trailing
shoe (2). Refer to Section 4E, Rear Drum Brake.
D107D511
5. Remove the parking brake cable.

Remove the clamp bolts fastening the brake cable
(RH Rear Brake Side) (1).

Remove the fuel filter. Refer to Section 1F, Engine
Controls.

PARKING BRAKE 4G–7
DAEWOO M-150 BL2
D107D512

Remove the clamp bolts fastening the brake cable
(LH Rear Brake Side) (2).
D17D513A
D17D514A
Installation Procedure
1. Install the fuel filter.
2. Install the parking brake cable with the clamp bolts.
Tighten
Tighten the parking brake cable clamp bolts to 10 Nm
(89 lb-in) (1, 2).
D17D515A
3. Connect the parking brake cable to the rear brake
drum assembly. Refer to Section 4E, Rear Drum
Brake.
4. Install the rear brake drum assembly. Refer to Sec-
tion 2D, Rear Suspension.
5. Install the grommet and the strengthener.
6. Install the cable pulley with the adjustment nuts.
Tighten
Tighten the adjustment nuts to 10 Nm (89 lb-in) (3).
7. Install the parking brake lever. Refer to “Parking Brake
Lever” in this section.