REFERENCE INFORMATION
NOTE
If the exhaust is not colorless it must
be either white, blue or black.
If exhaust color is:
WHITE. . . . . . . . . .Go to fuel system, Paragraph 2-22. Could be injector timing, DS level fault.
BLUE . . . . . . . . . . . .Blue smoke is a sign of oil entering the combustion chambers. It usually
enters past the piston rings or intake valve stem seals. This is an internal
engine problem that can't be handled at this level of maintenance. You may
want to run the Engine Mechanical Tests, Paragraph 2-18 before you notify
DS Maintenence.
BLACK. . . . . . . . . Intake/exhaust. Para. 2-23
TM 9-2320-280-20-1
ENGINE LUBRICATION
2-191
