Operating instructions

Blue exhaust gas
Component Cause Measure
Engine oil Too much oil in engine Drain engine oil (→ Page 156).
Oil separator or oil preseparator of
crankcase breather clogged
Replace.
Exhaust turbocharg‐
er, cylinder head, pis‐
ton rings, cylinder lin‐
er
Faulty Contact Service.
White exhaust gas
Component Cause Measure
Engine Not at operating temperature Run engine to reach operating temper‐
ature.
Fuel system Water in fuel Check fuel system at fuel prefilter
Drain fuel prefilter (→ Page 139).
Intercooler Leaking Contact Service.
110 | Troubleshooting | M015412/03E 2012-02
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