Exhaust gas blue
Component
Probable cause
Task
Engine oil
Too much engine oil in the engine
Drain engine oil (→ Page 99).
Oil separator of crankcase breather
contaminated
Exhaust turbocharg‐
er, cylinder head, pis‐
ton rings, cylinder lin‐
er
Defective
Contact Service.
Exhaust gas white
Component
Probable cause
Task
Engine
Not at operating temperature
Run engine to reach operating temper‐
ature.
Fuel system
Water in fuel
Check fuel system on fuel prefilter.
Drain fuel prefilter (→ Page 87).
Intercooler
Leaking
Contact Service.
50 | Troubleshooting | MS150064/01E 2011-11
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