Engine speed not steady
Cause
Corrective action
Injector faulty
u
Contact Service.
Speed transmitter faulty
u
Contact Service.
Air in fuel system
u
Vent fuel system (→ Page 110).
Engine governor faulty
u
Contact Service.
Charge-air temperature too high
Cause
Corrective action
Engine coolant mixture incorrect
u
Check (MTU test kit).
Charge-air cooler dirty
u
Contact Service.
Engine room: Air intake
temperature too high
u
Check fans and intake/exhaust lines.
Charge-air pressure too low
Cause
Corrective action
Air filter clogged
u
Replace air filter (→ Page 117).
Charge-air cooler dirty
u
Contact Service.
Exhaust turbocharger faulty
u
Contact Service.
Coolant leaks at charge-air cooler
Cause
Corrective action
Charge-air cooler leaky, major
coolant discharge
u
Contact Service.
Black exhaust gas
Cause
Corrective action
Air filter clogged
u
Replace air filter (→ Page 117).
Injector faulty
u
Contact Service.
Engine: Excessive load
u
Contact Service.
Blue exhaust gas
Cause
Corrective action
Too much oil in engine
u
Drain engine oil (→ Page 135).
Exhaust turbocharger, cylinder
head, piston rings, cylinder liner
faulty
u
Contact Service.
MS150100/06E 2017-08
| Troubleshooting | 59
TIM-ID: 0000078298 - 001
