Daewoo MATIZ - Page 18

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