2003 DAEWOO MATIZ drain bolt

GENERAL ENGINE INFORMATION 1A–9
DAEWOO M-150 BL2
GENERAL DIAGNOSIS (Cont’d)
 Condition Probable cause Correction
Poor FuelMalfunction of
Improper ignition timing.
Adjust the ignition timing.
ConsumptionIgnition System
Abnormal spark plug
(Excessive carbon deposit,
inadequate gap, burnt
electrode).
Replace the plug.

Electric leakage or poor
connection of the high
tension cable.
Connect the cable normally
or replace it.
Malfunction of
Cooling System
Malfunction of the
thermostat.
Replace the thermostat.
Others
Improperly installed valve.
Repair or replace the valve.

Slipping clutch.
Repair or replace the clutch.

Low pressure of tires.
Adjust the pressure of tires.
ExcessiveLeakage of
Loosened oil drain plug.
Tighten the plug.
Consumption of
Engine OilEngine Oil
Loosened oil pan bolt.
Tighten the bolt.Engine Oil

Loosened oil filter.
Tighten the filter.

Loosened oil pressure
switch.
Tighten the switch.

Leakage of camshaft front oil
seal.
Replace the seal.

Leakage of crankshaft front
oil seal.
Replace the seal.

Leakage at the cylinder head
cover gasket.
Replace the gasket.

Damage of the cylinder head
gasket.
Replace the gasket.
Oil Mixing in
Combustion
Stuck piston ring.
Remove carbon and replace
the ring.
Chamber
Worn piston or cylinder.
Replace the piston or the
cylinder.

Worn piston ring or ring
groove.
Replace the piston or ring.

Inadequate position of the
piston ring cutting part.
Adjust the position.

Abrasion or damage of the
valve system.
Replace the valve system.
Low Oil PressureMalfunction of
Lubrication
Inadequate oil viscosity.
Replace with the specified
one.
System
Loosening of the oil pressure
switch.
Tighten the switch.

Lack of engine oil.
Refill oil.

Blocking oil strainer.
Clean the strainer.

GENERAL ENGINE INFORMATION 1A–11
DAEWOO M-150 BL2
CHECKING ENGINE FLUID LEVEL
Check the engine fluid level or condition. If needed, refill
or replace the oil.
Check the engine oil level within engine normal operat-
ing temperature as follows ;
1. After stopping the engine, wait for a few minutes to
accumulate oil into the oil pan.
2. After pulling out the oil level gauge (a), check the oil
level.
3. Clean the oil level gauge and insert the gauge into
guide.
4. After pulling out the oil level gauge again, recheck the
oil level and insert the gauge into guide again.
Important: Oil level should be between “MIN” mark and
“MAX” mark.
5. If oil level is below the “MIN” mark, refill engine oil as
much as the demanded quantify.
Important: If checking oil level under the engine cold
condition, oil is not accumulated into oil pan quickly and
correct level checking can not be performed. Therefore,
wait until temperature reaches the normal operating
condition and check the engine oil level.
D102A301
CHANGING ENGINE OIL OR OIL
FILTER
Tools Required
09915–47341 Oil Filter Wrench.
When checking engine oil level or condition, if needed,
change engine oil (including the filter) as follows ;
1. After stopping the engine, wait for a few minutes to
accumulate oil into the oil pan.
2. Remove the oil filter cap (b).3. Remove the oil drain plug (c) and draw oil off.
D102A302
4. After drawing oil completely, tighten the oil drain plug
to 30–40 Nm (22–30 lb-ft).
5. Replace the oil filter using the oil filter wrench
09915–47341 (d).

Remove the air cleaner/resonator/snorkel as-
sembly.

After removing the bolts, remove the heat
shield.

Loosen the power steering pump cap screw and
pull the power steering hose into the front.

Remove the oil filter.
Important: Whenever changing engine oil, replace the
oil filter. When replacing new oil filter, apply engine oil on
oil filter sealing.
D102A303

ENGINE COOLING 1D–11
DAEWOO M-150 BL2
D102D505
Installation Procedure
1. Install the surge tank to the vehicle.
Install the surge tank with pressing down (1).
Connect the overflow hoses to the surge tank (2).
2. Secure the overflow hoses to the surge tank with the
hose clamps.
3. Fill the surge tank with coolant to the MAX mark.
D102D506
ELECTRIC COOLING FAN
Removal Procedure
1. Disconnect the negative battery cable.
2. Remove the electric cooling fan assembly.
Disconnect the cooling fan electrical connector (1).
Remove the bolts (2).
Remove the electric cooling fan assembly (3).
3.5–4.5 Nm
D12D507A
Installation Procedure
1. Install the electric cooling fan assembly with the bolts.
Tighten
Tighten the bolts to 3.5–4.5 Nm (31–40 lb-in).
2. Connect the cooling fan electrical connector.
3. Connect the negative battery cable.
D12D5081
RADIATOR
Removal Procedure
1. Disconnect the negative battery cable.
2. Disconnect the lower radiator hose and drain the en-
gine cooling system. Refer to “Draining and Refilling
the Cooling System” in this section.
3. Disconnect the upper radiator hose and the surge
tank hose.
Loosen the upper radiator hose clamp and discon-
nect the upper radiator hose (1).
Loosen the surge tank hose clamp and disconnect
the surge tank hose (2).

1D–12 ENGINE COOLING
DAEWOO M-150 BL2
D12D5091
4. Remove the electric cooling fan.
Refer to “Electric Cooling Fan” in this section.
5. Remove the radiator.
Remove the bolts (1).
Remove the radiator support brackets (2).
Remove the radiator (3).
6. Check the radiator for breaking, clog or other dam-
age.
Important: The radiator still contains a substantial
amount of coolant. Drain the remainder of the coolant
from the radiator into a drain pan.
D12D5101
Installation Procedure
1. Install the radiator with the mounting bolts (1) and the
support brackets (2).
Tighten
Tighten the support bracket bolts to 3.5–4.5 Nm
(31–40 lb-in).
2. Install the electric cooling fan.
Refer to “Electric Cooling Fan” in this section.
D12D5111
3. Connect the upper radiator hose to the radiator (1).
4. Connect the surge tank hose to the radiator (2).
5. Secure each hose with hose clamps.
6. Refill the engine cooling system. Refer to “Draining
and Refilling the Cooling System” in this section.
7. Connect the negative battery cable.
D102D512
THERMOSTAT (TYPICAL)
Removal Procedure
Caution: To prevent personal injury, do not remove
the surge tank cap while the engine and the radiator
are hot because the heat causes the system to re-
main under pressure. Scalding fluid and steam may
be blown out under pressure.
1. Remove air filter assembly. Refer to Section 1B,
SOHC Engine Mechanical.
2. Disconnect the lower radiator hose and drain the
coolant. Refer to “Drain and Refilling the Cooling Sys-
tem”
3. Disconnect the upper radiator hose.

ENGINE COOLING 1D–13
DAEWOO M-150 BL2
Loosen the hose clamp (1).
Disconnect the upper radiator hose (2).
D102D513
4. Remove the thermostat.
Remove the bolts (1).
Remove the thermostat housing (2).
Remove the thermostat with the gasket (3).
5. Check the gasket for crack or other damage.
6. Inspect the valve seat for foreign matter that could
prevent the valve from seating properly.
7. Inspect the thermostat for proper operation. Refer to
“Thermostat Test” in this section.
8–15 Nm
D12D514A
Installation Procedure
1. Install the thermostat with the bolts and the thermo-
stat housing.
Tighten
Tighten the mounting bolts to 8–15 Nm (71–130
lb-in).
2. Secure the upper radiator hose to the thermostat
housing with a hose clamp.
3. Refill the engine cooling system. Refer to “Draining
and Refilling the Cooling System” in this section.
MAA1D010
THERMOSTAT (EURO III)
Removal Procedure
Caution: To prevent personal injury, do not remove
the surge tank cap while the engine and the radiator
are hot because the heat causes the system to re-
main under pressure. Scalding fluid and steam may
be blown out under pressure.
1. Remove air filter assembly. Refer to Section 1B,
SOHC Engine Mechanical.
2. Disconnect the lower radiator hose and drain the
coolant. Refer to “Drain and Refilling the Cooling Sys-
tem”
3. Disconnect the upper radiator hose.

1D–14 ENGINE COOLING
DAEWOO M-150 BL2
MAA1D020
4. Remove the thermostat.
Remove the bolts.
Remove the thermostat housing.
Remove the thermostat with the gasket.
5. Check the gasket for crack or other damage.
6. Inspect the valve seat for foreign matter that could
prevent the valve from seating properly.
7. Inspect the thermostat for proper operation. Refer to
“Thermostat Test” in this section.
MAA1D011
Installation Procedure
1. Install the thermostat with the bolts and the thermo-
stat housing.
Tighten
Tighten the mounting bolts to 8–15 Nm (71–130
lb-in).
2. Secure the upper radiator hose to the thermostat
housing with a hose clamp.
3. Refill the engine cooling system. Refer to “Draining
and Refilling the Cooling System” in this section.
4. Install the air filter assembly. Refer to Section 1B,
SOHC Engine Mechanical.
D102D515
COOLANT TEMPERATURE SENSOR
Removal Procedure
1. Disconnect the negative battery cable.
2. Disconnect the lower radiator hose and drain the
coolant. Refer to “Draining and Refilling the Cooling
System” in this section.
3. Remove the coolant temperature sensor.
Disconnect the electrical connector (1).
Remove the coolant temperature sensor (2).
D12D516A
10 Nm
Installation Procedure
1. Install the coolant temperature sensor into the
threaded hole in the intake manifold.
Tighten
Tighten the coolant temperature sensor to 10 Nm
(89 lb-in).
Connect the electrical connector to the coolant
temperature sensor (1).
2. Connect the lower radiator hose and refill the coolant.
Refer to “Draining and refilling the cooling system” in
this section.
3. Connect the negative battery cable.

ENGINE COOLING 1D–15
DAEWOO M-150 BL2
D102D517
ENGINE COOLANT TEMPERATURE
SENSOR
Removal Procedure
1. Disconnect the negative battery cable.
2. Disconnect the lower radiator hose and drain the
coolant “Draining and Refilling the Cooling System” in
this section.
3. Remove the engine coolant temperature (ECT) sen-
sor.
Disconnect the electrical connector (1).
Remove the ECT sensor (2).
D12D518A
20 Nm
Installation Procedure
1. Install the ECT sensor.
Tighten
Tighten the ECT sensor to 20 Nm (15 lb-ft).
Connect the electrical connector to the ECT sen-
sor (1).
2. Connect the lower radiator hose and refill the coolant.
Refer to “Draining and Refilling the Cooling System”
in this section.
3. Connect the negative battery cable.
D102B533
COOLANT PUMP
Removal Procedure
1. Disconnect the negative battery cable.
2. Disconnect the lower radiator hose and drain the
coolant. Refer to “Draining and Refilling the Cooling
System” in this section.
3. Remove the timing belt. Refer to Section 1B, Engine
Mechanical.
4. Remove the rear timing belt cover.
Remove the bolts (1).
Remove the rear timing belt cover (2).
D102D519
5. Remove the coolant pump.
Remove the nuts (1).
Remove the bolts (2).
Remove the coolant pump (3).
Remove the gasket.
Notice: Remove the coolant pump as shown figure (a).

1D–16 ENGINE COOLING
DAEWOO M-150 BL2
9–12 Nm
9–12 Nm
D12D520A
D12D521A
Installation Procedure
1. Install the coolant pump with the new gasket.
Tighten
Tighten the bolts and the nuts to 9–12 Nm (80–106
lb-in) (a).
2. Install the rear timing belt cover.
Tighten
Tighten the bolts to 9–12 Nm (80–106 lb-in) (b).
3. Install the timing belt. Refer to Section 1B, Engine
Mechanical.
4. Connect the lower radiator hose and drain the cool-
ant. Refer to “Draining and Refilling the Cooling Sys-
tem” in this section.
5. Connect the negative battery cable.