User Manual

BASIC TROUBLESHOOTING
BASIC TROUBLESHOOTING
This section covers basic
troubleshooting of engine operation
or perform ance malfunctions and
their probable causes. In addition to
operating the engine carefully and
maintaining it properly, make sure to
correct any m alfu nction promptly.
Objectio nable Exhaust Symptom s and Probable Causes
Probable Causes
Black or
Gray Smoke
Blue Smoke
White
Smoke
Damaged or d irty air
cleaner
X
Improper grade of fuel
X
Excessive exhaust back
pressure
X
Misfiring cylinders
X
Lubricating oil not burned
in cylinder (being burned
in exhaust manifold or
turbocharger)
X
Faulty injector timing X
Faulty oil control rings X
Excessive installation angle X
Excessive oil in crankcase X
High ambient temperature X
Thin air (high altitude)
X
Cetane rating of fuel too
low
X
Air in the fuel system
X
116 All information subject to change without notice. (Rev. 01/04)
DDC-SVC-MAN-0058 Copyright © 2004 DETROIT DIESEL CORPORATION