Turbocharger - Mercury MerCruiser D2.8L D-Tronic Service Manual

TROUBLESHOOTING

Turbocharger

Ensure that troubles are not due to engine components, especially to injection system,
before troubleshooting turbocharger and/or carrying out corrective action on turbocharger.
1. Smoke from exhaust
2. Loss of power
3. Unusual noises and vibrations at
turbocharger
4. Rubbing of compressor or turbine
impellers
against housing
5. Oil leakage from compressor side
Page 1C-18
Cause
SERVICE MANUAL NUMBER 22
Special Information
1. A. Not enough air getting to engine air
intake
B. Clogged air filter
C. Boost pressure too low
Refer to Engine Smoking - Black,
D.
Blue and/or White
2. A. Not enough air getting to engine air
intake
B. Clogged air cleaner
C. Boost pressure too low
D. Poor lubrication of turbocharger
E. Defective wastegate valve
F. Rubbing of compressor or turbine
impellers against housing
G. Defective engine gaskets allowing
air or fuel escape into exhaust or intake
system
3. A. Poor lubrication of turbocharger
B. Rubbing of compressor or turbine
impellers against housing
C. Defective engine gaskets allowing
air or fuel escape into exhaust or intake
system
4. A. Poor lubrication of turbocharger
B. Low oil pressure at turbocharger
C. Defective bearings in turbocharge
5. A. Clogged air cleaner
B. Boost pressure too low
90-860074--1 FEBRUARY 2002
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