6-2 Troubleshooting 022-00028AE Operation and Maintenance Manual
Engine knocks, runs unevenly or
surges.
Low engine oil. Add oil.
Plugged air intake system. Clean system and replace filter.
Injection pump out of
adjustment.
Contact your Daewoo dealer.
Plugged fuel filter. Replace fuel filter.
Water or dirt in fuel system. Clean system and add new fuel.
Clogged or dirty fuel injectors. Clean injectors.
Engine has poor power. Plugged air intake system. Clean system and replace filter.
Clogged or dirty fuel injectors. Clean injectors.
Fuel filters plugged. Replace filters.
Engine speed control cable out
of adjustment.
Readjust.
Injection pump out of
adjustment.
Contact your Daewoo dealer.
Valve backlash faulty. Adjust backlash.
Engine runs hot. Low coolant level. Add coolant.
Thermostat faulty. Replace thermostat.
Radiator cap faulty. Replace radiator cap.
Radiator core plugged. Clean oil cooler.
Oil cooler core plugged. Clean oil cooler.
Fan belt loose or damaged. Tighten or replace as required.
Temperature sensor faulty. Replace sensor.
Engine oil pressure warning light
turns "ON," and buzzer sounds.
Low engine oil level. Add oil.
Wrong grade oil for weather
conditions.
change oil.
Clogging oil filter element. Change filter and oil.
Defective alarm switch. Contact your Daewoo dealer.
Oil leakage from pipe or joint.
Clogging suction strainer.
Excessive engine wear.
Defective oil pump.
Problem Cause Remedy
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