2-190
4
KNOWN INFO
OIL GAUGE OK
NO OIL LEAKS
OIL OK
FILTER OK
PRESSURE OK
INTERNAL ENGINE
PROBLEMS
POSSIBLE PROBLEMS
No faults found. If you
still have a problem, you may
want to re-run the test chain to
make sure you didn’t miss
anything.
TM 9-2320-280-20-1
ENGINE LUBRICATION
DIAGNOSTIC FLOWCHART
TEST OPTIONS
Look
REASON FOR QUESTION
Blue smoke indicates oil in
the exhaust.
NO
YES
See note
at right
From 3,
Page 2-188
Is the exhaust colorless?
(especially no blue smoke)