DV11
Operation and Maintenance
195
Maintenance of Major Components
Printed in Mar. 2005 PS-MMA0608-E1A
5.3.7. Diagnostics and troubleshooting
Complaints Possible causes Corrections
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
coming in contact with each other or
damaged
Disassemble/repair
or replace
1. Excessive black smoke
6) Exhaust piping deformed or clogged Check and correct
1) Oil leak into turbine and compressor
Disassemble/repair
or replace
2. Excessive white smoke
2) Worn or damaged seal ring due to
excessive wear of bearing
Disassemble/repair
or replace
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
3. Low engine output
4) Leakage at discharge port on
compressor side
Check and correct
1) Rotor assembly coming in contact
Disassemble/repair
or replace
2) Unbalanced rotation of rotor
Disassemble/repair
or replace
3) Seized up
Disassemble/repair
or replace
4. Unusual sound or
vibration
4) Each joint loosened Check and correct
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