Blue exhaust gas
Component Cause Action
Engine oil Too much oil in engine Drain engine oil (→ Page 104).
Filter element in oil separator is clog‐
ged
Replace (→ Page 78).
Exhaust turbocharg‐
er, cylinder head, pis‐
ton rings, cylinder lin‐
er
Faulty Contact Service.
White exhaust gas
Component Cause Action
Engine Not at operating temperature Run engine to reach operating temper‐
ature.
Fuel system Water in fuel Drain fuel prefilter
Check fuel system.
Intercooler Leaking Contact Service.
MS150049/02E 2012-11 | Troubleshooting | 51
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