TM 5-2420-230-24-2
Troubleshooting Symptoms Charts
B3.9 and B5.9 Series Engines
Page TS-76
Section TS - Troubleshooting Symptoms
Smoke, Black -- Excessive (Continued)
Cause
Correction
Check and correct any leaks in the exhaust
manifold or turbocharger gaskets. Check for a
Exhaust leaks at the manifold or turbocharger
.......
cracked exhaust manifold. Refer to Procedure
011-007.
OK
T
urbocharger wastegate is malfunctioning (if
Check the wastegate for correct operation.
.......
equipped)
Refer to Procedure 010-050.
OK
T
Check for the specified boost pressure. Inspect
urbocharger is worn or malfunctioning
.......
the turbocharger. Replace if necessary. Refer
to Procedure 010-033.
OK
I
Remove and test the injectors. Replace as
njectors worn or malfunctioning
.......
necessary. Refer to Procedure 006-026.
OK
I
Remove the injector. Check for extra sealing
washer is installed under the injector. Check
njector sealing washer not correct
.......
for proper sealing washer, and remove any
additional sealing washer(s). Only one is
required. Refer to Procedure 006-026.
OK
F
Put the engine at top dead center. Check and
uel injection pump timing is not correct
.......
adjust the fuel timing. Refer to Procedure
005-037.
OK
F
Remove the fuel injection pump. Check the
uel injection pump is malfunctioning
.......
calibration of the fuel injection pump. Refer to
Procedure 005-012 or 005-014.
OK
P
Perform a compression check and correct as
iston rings not sealing (blue smoke)
.......
required. Refer to Procedure 014-008.
L-660
