MTU MS15025/00E - Page 36

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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