Daewoo MATIZ Service Manual page 19

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Condition
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Poor Fuel
Consumption
Excessive
Consumption of
Engine Oil Engine Oil
Low Oil Pressure
DAEWOO M-150 BL2
GENERAL DIAGNOSIS (Cont'd)
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D Improper ignition timing.
Malfunction of
Ignition System
D Abnormal spark plug
(Excessive carbon deposit,
inadequate gap, burnt
electrode).
D Electric leakage or poor
connection of the high
tension cable.
D Malfunction of the
Malfunction of
thermostat.
Cooling System
D Improperly installed valve.
Others
D Slipping clutch.
D Low pressure of tires.
D Loosened oil drain plug.
Leakage of
Engine Oil
D Loosened oil pan bolt.
D Loosened oil filter.
D Loosened oil pressure
switch.
D Leakage of camshaft front oil
seal.
D Leakage of crankshaft front
oil seal.
D Leakage at the cylinder head
cover gasket.
D Damage of the cylinder head
gasket.
D Stuck piston ring.
Oil Mixing in
Combustion
Chamber
D Worn piston or cylinder.
D Worn piston ring or ring
groove.
D Inadequate position of the
piston ring cutting part.
D Abrasion or damage of the
valve system.
D Inadequate oil viscosity.
Malfunction of
Lubrication
System
D Loosening of the oil pressure
switch.
D Lack of engine oil.
D Blocking oil strainer.
GENERAL ENGINE INFORMATION 1A – 9
Probable cause
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Correction
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D Adjust the ignition timing.
D Replace the plug.
D Connect the cable normally
or replace it.
D Replace the thermostat.
D Repair or replace the valve.
D Repair or replace the clutch.
D Adjust the pressure of tires.
D Tighten the plug.
D Tighten the bolt.
D Tighten the filter.
D Tighten the switch.
D Replace the seal.
D Replace the seal.
D Replace the gasket.
D Replace the gasket.
D Remove carbon and replace
the ring.
D Replace the piston or the
cylinder.
D Replace the piston or ring.
D Adjust the position.
D Replace the valve system.
D Replace with the specified
one.
D Tighten the switch.
D Refill oil.
D Clean the strainer.