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Page Title:
EXCESSIVE BLACK OR GRAY EXHAUST SMOKE (ENGINE AT NORMAL OPERATING TEMPERATURE). (Cont) |
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 TM 9-2320-364-34-1
4. EXCESSIVE BLACK OR GRAY EXHAUST SMOKE (CONT).
5.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
Unit Troubleshooting tasks
Cylinder liner ports inspection.
on Page 2-87
completed.
Injector response times OK.
REASON FOR QUESTION
Injector pulse widths OK.
Are cylinder liner air inlet
Injector timing OK.
Fuel to air ratio will not be
ports clean and free from
Blower bypass valve OK.
correct if cylinder liner air inlet
restrictions?
ports are clogged, and may
cause black or gray exhaust
POSSIBLE PROBLEMS
smoke.
Clogged cylinder air inlet ports.
Low air box pressure.
Replace engine
(Para 3-4).
NO
Verify repair, go to
Step 7 of this Fault.
YES
2-86
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