MTU 12 V 4000 C10 Operating Instructions Manual page 50

Component
Fuel injection equip‐
ment
Engine cabling
Engine
Engine speed not steady
Component
Fuel injection equip‐
ment
Speed sensor
Fuel system
DDEC
Charge air temperature too high
Component
Engine coolant
Intercooler
Engine room
Charge-air pressure too low
Component
Air supply
Intercooler
Exhaust turbocharger Faulty
Coolant leaks at intercooler
Component
Intercooler
Black exhaust gas
Component
Air supply
Fuel injection equip‐
ment
Engine
50 | Troubleshooting | MS150049/02E 2012-11
Cause
Injector faulty
Faulty
Overloaded
Cause
Injector faulty
Faulty
Air in fuel system
Faulty
Cause
Engine coolant treatment incorrect
Contaminated
Air-intake temperature too high
Cause
Air filter clogged
Contaminated
Cause
Leaking, major coolant discharge
Cause
Air filter clogged
Injector faulty
Overloaded
Action
Replace (→ Page 91).
Check (→ Page 140).
Contact Service.
Action
Replace (→ Page 91).
Contact Service.
Vent fuel system (→ Page 97).
Contact Service.
Action
Check (MTU test kit).
Contact Service.
Check fans and intake/exhaust lines.
Action
Check signal ring position of service in‐
dicator (→ Page 102).
Contact Service.
Contact Service.
Action
Contact Service.
Action
Check signal ring position of service in‐
dicator (→ Page 102).
Replace (→ Page 91).
Contact Service.