OP000040Troubleshooting
6-2
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 DOOSAN 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.
Clogged oil filter. Change filter and oil.
Defective alarm switch. Contact your DOOSAN dealer.
Oil leakage from pipe or joint.
Clogged suction strainer.
Excessive engine wear.
Defective oil pump.
Coolant temp, warning light
turns "ON."
Low engine coolant level. Add coolant.
Loose/slipping/broken fan belt. Adjust or replace belt.
Clogged radiator fins. Clean.
Scale or mineral build up
inside radiator.
Flush or professionally clean.
Defective alarm switch (gauge
is in green).
Contact your DOOSAN dealer.
Low water pump flow.
Thermostat stuck or missing.
Engine does not start when
the starter motor is turning.
(Also see ELECTRICAL
TROUBLESHOOTING.)
Fuel filter clogged. Replace fuel filter.
Starter motor speed too low. Booster Battery may be used.
Defective engine shutoff
solenoid.
Contact your DOOSAN dealer.
Fuel pump failure.
Incorrect fuel injection timing.
Compression pressure too low.
Defective injectors.
Problem Possible Cause Remedy
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