MTU MW15406/17E Operating Instructions Manual page 132

Coolant leaks at intercooler
Cause
Major coolant discharge at
charge-air cooler. Charge-air
cooler leaky.
Black exhaust gas
Cause
Air filter clogged.
Injector faulty.
Injection pump faulty.
Overload.
Blue exhaust gas
Cause
Too much oil in engine.
Oil separator or oil preseparator
of crankcase breather clogged.
Exhaust turbocharger faulty.
Cylinder head is faulty.
Piston rings are defective.
Cylinder liner defective.
White exhaust gas
Cause
Engine is not at operating
temperature.
Water in fuel.
Charge-air cooler leaky.
132 | Troubleshooting | MW15406/17E 2014-05
Corrective action
u Contact Service.
Corrective action
u Check signal ring position of contamination indicator
(→ Page 184).
u Replace (→ Page 163).
u Replace (→ Page 159).
u Contact Service.
Corrective action
u Drain engine oil (→ Page 188).
u Replace (→ Page 152).
u Contact Service.
u Contact Service.
u Contact Service.
u Contact Service.
Corrective action
u Run engine to reach operating temperature.
u Check fuel system at fuel prefilter.
Drain fuel prefilter (→ Page 176).
u Contact Service.