3.9 and B5.9 Series Engines
Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms
Check the exhaust brake adjustment. Refer to
Exhaust brake adjustment is not correct
the OEM service manual.
xhaust system restriction is above specifica-
Check the exhaust system for restrictions.
Refer to Procedure 011-009.
Measure and adjust the overhead settings.
verhead adjustments are not correct
Refer to Procedure 003-004.
Remove the injectors and compare the part
numbers to the Control Parts List (CPL),
njectors are not correct
Bulletin No. 3379133. Replace the injectors if
necessary. Refer to Procedure 006-026.
Perform a pot test on the injector(s). Refer to
njector is malfunctioning
Operate the engine from a tank of high-quality
fuel. Refer to the Operation and Maintenance
uel grade is not correct for the application, or
Manual, B Series Engines, Bulletin No.
the fuel quality is poor
Fill the fuel tank, turn off or bypass the fuel
uel inlet temperature to pump is above
heaters, and check the fuel cooler. Refer to the
OEM service manual.
Check the fuel supply line from the fuel pump
uel supply line restriction between the fuel
to the cylinder head for sharp bends that can
pump and the injectors
cause restrictions. Refer to Procedure 006-051.