Daewoo DE12T User Manual

6.4.7. Diagnostics and troubleshooting
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MAINTENANCE OF MAJOR COMPONENTS
Complaints Possible causes Corrections
1. Excessive black smoke 1) Air cleaner element clogged Replace or clean
2) Restrictions in air duct Check and correct
3) Leakage at intake manifold Check and correct
4) Turbocharger seized up and not rotating
Disassemble/repair
or replace
5) Turbine blades and compressor blades
Disassemble/repair
coming in contact with each other or damaged or replace
6) Exhaust piping deformed or clogged Check and correct
2. Excessive white smoke 1) Oil leak into turbine and compressor
Disassemble/repair
or replace
2) Worn or damaged seal ring due to excessive
Disassemble/repair
wear of bearing or replace
3. Low engine output 1) Gas leak at each part of exhaust system Check and correct
2) Air cleaner element restricted Replace or clean
3) Turbocharger fouled or damaged
Disassemble/repair
or replace
4) Leakage at discharge port on compressor side Check and correct
4. Unusual sound or 1) Rotor assembly coming in contact
Disassemble/repair
vibration or replace
2) Unbalanced rotation of rotor
Disassemble/repair
or replace
3) Seized up
Disassemble/repai r
or replace
4) Each joint loosened Check and correct

Daewoo DE12T Specifications

General

Brand	Daewoo
Model	DE12T
Category	Engine
Language	English