A Series Diesel Engine Troubleshooting Logic 30
Excessive Exhaust Smoke
Cause
Correction
Engine Running Too Cold
(White Smoke)
Refer to Troubleshooting Logic for Coolant
Temperature Below Normal.
OK
Inadequate Intake Air
Inspect/Change Air Cleaner. Look for
Other Restrictions. Refer to Page 112
OK
Air Leak Between the
Turbocharger and the Intake
Manifold
Check/Correct Leaks in the Air Crossover
Tube, Hoses, or Through Holes in the
Manifold Cover. Refer to Page 100, 101
OK
Exhaust leak at the Manifold or
Turbocharger
Check/Correct Leaks in the Manifold or
Turbocharger Gaskets. Look for a Cracked
Manifold. Refer to Page 100, 101
OK
Malfunctioning Turbocharger
Inspect/Replace Turbocharger.
Refer to Page 101
OK
More than One Sealing Washer
Under an Injector
Remove Extra Washer.
Refer to Page 89
OK
Malfunctioning Injectors
Replace Injectors.
Refer to Page 88
OK
(Continued)