Blue exhaust gas
Component Probable Cause Action
Engine oil Engine oil level too high Drain engine oil (→ Page 100).
Oil separator of crankcase breather con-
taminated
Replace (→ Page 70).
Exhaust turbocharger,
cylinder head, piston
rings, cylinder liner
Faulty Contact Service.
White exhaust gas
Component Probable Cause Action
Engine Not at operating temperature Run engine to reach operating tempera-
ture.
Fuel system Water in fuel Check fuel system at fuel prefilter
Drain fuel prefilter (→ Page 89).
Intercooler Leaking Contact Service.
MS150118/00E 2014-07 | Troubleshooting | 67
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