Engine speed not steady
Cause
Corrective action
Fuel injection: Injector faulty
u
Speed transmitter faulty
u
Contact Service.
Engine Control Unit faulty
u
Contact Service.
Charge-air temperature too high
Cause
Corrective action
Incorrect coolant concentration
u
Check (MTU test kit).
Intercooler dirty
u
Contact Service.
Engine room: Air-intake
temperature too high
u
Check fans and air supply/ventilation ducts.
Charge-air pressure too low
Cause
Corrective action
Air supply: Air filter clogged
u
Check signal ring position of service indicator (→ Page 209).
Intercooler dirty
u
Contact Service.
Exhaust turbocharger faulty
u
Contact Service.
Coolant leaks at intercooler
Cause
Corrective action
Intercooler leaking, major coolant
discharge
u
Contact Service.
Black exhaust gas
Cause
Corrective action
Air supply: Air filter clogged
u
Check signal ring position of service indicator (→ Page 209).
Fuel injection: Injector faulty
u
Engine: Overload
u
Contact Service.
Blue exhaust gas
Cause
Corrective action
Too much oil in engine
u
Drain engine oil (→ Page 212).
Oil separator or oil-preseparator
of crankcase breather clogged
u
Replace.
Exhaust turbocharger, cylinder
head, piston rings, cylinder liner
faulty
u
Contact Service.
116 | Troubleshooting | MS15035/00E 2018-08
TIM-ID: 0000010520 - 005
Summary of Contents for 12V4000M*3 series
Page 1: ...Operating Instructions Diesel engine 12V4000Mx3x 16V4000Mx3x MS15035 00E...
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