Daewoo MATIZ - Page 19

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