Black exhaust gas
Component
Cause
Action
Air supply
Air filter clogged
Replace air filter (→ Page 44).
Fuel injection equip‐
ment
Injector faulty
Contact Service.
Engine
Overloaded
Contact Service.
Table 10: Black exhaust gas
Blue exhaust gas
Component
Cause
Action
Engine oil
Too much oil in engine
Drain engine oil (→ Page 47).
Oil mist fine separator of crankcase
breather clogged
Contact Service.
Exhaust turbocharger
Cylinder head
Piston rings
Cylinder liner
Faulty
Contact Service.
Table 11: Blue exhaust gas
White exhaust gas
Component
Cause
Action
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 43).
Intercooler
Leaking
Contact Service.
Table 12: White exhaust gas
36 | Troubleshooting | MS15025/00E 2011-12
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