Blue exhaust gas
Cause Corrective action
Too much engine oil in the engine u Drain engine oil (→ Page 135).
Oil separator or oil pre-separator
of crankcase breather clogged
1. Clean preseparator (→ Page 104).
2. Replace oil separator element (→ Page 105).
Exhaust turbocharger, cylinder
head, piston rings, cylinder liner
defective
u Contact Service.
White exhaust gas
Cause Corrective action
Engine is not at operating
temperature
u Run engine to reach operating temperature.
Water in fuel u Drain fuel prefilter (→ Page 119).
Charge-air cooler leaking u Contact Service.
M015650/06E 2018-05 | Troubleshooting | 65
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