TM 5-3805-294-23-1
0118
Table 1. Engine Emits Excessive White Exhaust Smoke - Continued.
Test or Inspection
Corrective Action
Malfunction
3.
Turn key switch to OFF
1.
If any DTCs are active,
position (TM 5-3805-294-10).
discontinue this
troubleshooting procedure and
(Volume 5, WP 0794)
perform procedure for active
DTCs. Resolve all DTCs
before continuing this
procedure.
2.
If no active DTCs are present,
proceed to Malfunction 3.
1.
Turn key switch to ON position;
3.
Check For Type of
START ENGINE (TM
White Smoke.
5-3805-294-10). (Volume 5,
WP 0794)
2.
Operate engine to where the
fault occurs. Note type of white
exhaust smoke. (Volume 5,
WP 0794)
White exhaust smoke is
caused by condensing liquid in
the exhaust system. The liquid
is typically diesel fuel or
coolant. Unburned diesel fuel
in the exhaust has a strong
diesel fuel odor and causes a
severe burning sensation in
the eyes. Unburned diesel fuel
is caused by a misfire or
incomplete combustion. Too
low of a coolant temperature
may result in white smoke due
to incomplete combustion.
Poor fuel quality or fuel not
blended for the operation
conditions may also cause
incomplete combustion.
Coolant in the exhaust causes
an odor that can be described
as sweet. White smoke
accompanied with coolant loss
and overheating indicates that
the white smoke is likely due to
coolant in the exhaust.
0118-2