Daewoo MATIZ Service Manual page 18

1A – 8 GENERAL ENGINE INFORMATION
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Condition
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Engine Surging
(Engine power makes
fluctuation in a fixed
speed and speed
changes without
operating the
accelerating pedal.)
Excessive Detonation
(According to the
opening range of
throttle valve,
knocking sound of
metallic is made with metallic is made with
abnormal explosion.)
Overheat
Poor Fuel
Consumption
GENERAL DIAGNOSIS (Cont'd)
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Ñ Ñ Ñ Ñ Ñ Ñ Ñ Ñ Ñ Ñ Ñ Ñ D Leak of the intake manifold
Others
gasket.
D Leakage of the vacuum hose.
D Refer to "Overheat" in this
Overheated
page.
Engine
D Abnormal spark plug.
Malfunction of
Ignition System
D Poor ignition timing.
D Electric leakage or poor
connection of the high tension
cable.
D Clogged or contaminated fuel
Malfunction of
filter and fuel pipe.
Fuel System
D Leak of the intake manifold
Others
gasket.
D Excessive carbon deposit due
to abnormal combustion.
D Lack of coolant.
Malfunction of
Cooling System
D Malfunction of the thermostat.
D Malfunction of the cooling fan.
D Poor water pump
performance.
D Clogged or leaky radiator.
D Poor engine oil.
Malfunction of
Lubrication
System
D Blocking oil filter or strainer.
D Lack of engine oil.
D Poor oil pump performance.
D Leakage of oil.
D Damaged cylinder head
Other
gasket.
D Refer to "Page 1A–5".
Decline of
Compression
Pressure
D Leakage of the fuel tank or
Malfunction of
Fuel System the fuel pipe.
Probable cause
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Correction
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Ñ Ñ Ñ Ñ Ñ Ñ Ñ Ñ Ñ Ñ Ñ D Clean or replace the gasket.
D Connect the hose correctly
or replace it.
D Refer to "Overheat" in this
page.
D Replace the spark plug.
D Adjust the ignition timing.
D Connect the cable correctly
or replace it.
D Clean or replace the fuel
filter and the fuel pipe.
D Replace the gasket.
D Remove the carbon.
D Refill coolant.
D Replace the thermostat.
D Check or replace the cooling
fan.
D Replace the pump.
D Clean, repair or replace the
radiator.
D Replace engine oil with the
specified one.
D Clean or replace the oil filter
or the strainer.
D Refill oil.
D Replace or repair the pump.
D Repair.
D Replace the gasket.
D Refer to "Page 1A–5".
D Repair or replace the fuel
tank or the fuel pipe.
DAEWOO M-150 BL2