Operation and maintenance manual

QSB4.5 and QSB6.7 Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms Page TS-63
Smoke, White — Excessive
Cause Correction
STEP 9
Air intake system restriction is above specification
.............
Check the air intake system for restriction. Clean
or replace the air filter and inlet piping as
necessary. Refer to Section 3.
OK
Go To Next Step
STEP 10
Charge air cooler is restricted or leaking
.............
Inspect the charge air cooler for air restrictions or
leaks. Refer to Section 4.
OK
Go To Next Step
STEP 11
Contact a Cummins® Authorized Repair Facility