TM 5-2420-230-24-2
3.9 and B5.9 Series Engines
Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms
Page TS-29
Engine Difficult to Start or Will Not Start (Exhaust Smoke)
This is symptom tree T043.
Cause
Correction
Verify the correct starting procedure. Refer to
Starting procedure is not correct
.......
the Operation and Maintenance Manual, B
Series Engines, Bulletin No. 3810205..
OK
E
Make sure all drive units are disengaged.
Check the engine cranking speed with a
handheld tachometer or electronic service tool.
ngine cranking speed is too slow
.......
If the cranking speed is slower than 150 rpm,
refer to the Engine Will Not Crank or Cranks
Slowly symptom tree.
OK
E
Check for loose wires and verify that the
solenoid is functioning. Check to be sure
lectrical or manual fuel shutdown binds
.......
manual shut off lever is not binding at the
injection pump. Refer to Procedure 005-043.
OK
S
Check for correct operation of cold starting aid.
Refer to Cold Weather Starting Aids in the
tarting aid is necessary for cold weather, or
.......
Operation and the Operation and Maintenance
starting aid is malfunctioning
Manual, B Series Engines, Bulletin No.
3810205.
OK
I
If the vehicle is equipped with a valve switch
the intake source from under the hood to
ntake air source is incorrect
.......
outside, position and valve for the season.
OK
I
Inspect and clean any debris from the front of
ntake air overheated
.......
the charge-air cooler. Refer to the OEM service
manual.
OK
A
Check for air in the fuel system. Refer to
ir in the fuel system
.......
Procedure 006-003.
OK
B
(Continued)
L-613
