Operation and maintenance manual

Troubleshooting Symptoms Charts QSB4.5 and QSB6.7
Page TS-62 Section TS - Troubleshooting Symptoms
Smoke, White — Excessive
Cause Correction
STEP 1
Starting procedure is not correct
.............
Verify the correct starting procedure. Refer to
Section 1.
OK
Go To Next Step
STEP 2
Engine is cold
.............
Allow the engine to warm to operating
temperature. If the engine will not reach operating
temperature, refer to the Coolant Temperature
Below Normal symptom tree.
OK
Go To Next Step
STEP 3
Engine is operating at low ambient temperature
.............
Check the winterfront, shutters, and under-the-
hood air. Use under-the-hood intake air in cold
weather. Refer to Cold Weather Operation, Bulletin
3387266, and Section 1.
OK
Go To Next Step
STEP 4
Electronic fault codes are active
.............
For instructions on how to read active fault codes,
refer to Section 1. If fault codes are active, contact
a Cummins Authorized Repair Facility.
OK
Go To Next Step
STEP 5
Starting aid is malfunctioning
.............
Check for correct operation of cold-starting aid.
Refer to Cold Weather Starting Aids in Section 1.
Refer to the manufacturer's instructions.
OK
Go To Next Step
STEP 6
Coolant temperature is below specification
.............
Refer to the Coolant Temperature is Below Normal
symptom tree.
OK
Go To Next Step
STEP 7
Fuel grade is not correct for the application or the
fuel quality is poor
.............
Operate the engine from a tank of high-quality fuel.
Refer to Fuel Recommendations and
Specifications in Section V.
OK
Go To Next Step
STEP 8
Air intake or exhaust leaks
.............
Check for loose or damaged piping connections
and missing pipe plugs. Check the turbocharger
and exhaust manifold mounting. Refer to Section
4.
OK
Go To Next Step