MTU M015710/04E Operating Instructions Manual page 65

Engine does not reach nominal speed
Component
Fuel supply
Air supply
Fuel injection equip‐
ment
Engine wiring
Engine
Engine speed not steady
Component
Fuel injection equip‐
ment
Speed sensor
Fuel system
Engine Governor
Charge-air temperature too high
Component
Engine coolant
Intercooler
Engine room
Charge air pressure too low
Component
Air supply
Intercooler
Exhaust turbocharger Defective
Coolant leaks on intercooler
Component
Intercooler
Exhaust gas black
Component
Air supply
Fuel injection equip‐
ment
Engine
80 | Troubleshooting | M015710/04E 2012-09
Probable cause
Fuel prefilter clogged
Easy-change fuel filter clogged
Air filter clogged
Injector defective
Defective
Overloaded
Probable cause
Injector defective
Defective
Not vented
Defective
Probable cause
Incorrect coolant concentration
Contaminated
Air-intake temperature too high
Probable cause
Air filter clogged
Contaminated
Probable cause
Leaking, major coolant discharge
Probable cause
Air filter clogged
Injector defective
Overloaded
Task
Replace (→ Page 159).
Replace (→ Page 153).
Check signal ring position of service in‐
dicator (→ Page 165).
Replace (→ Page 146).
Check (→ Page 195).
Contact Service.
Task
Replace (→ Page 146).
Contact Service.
Vent fuel system (→ Page 152).
Contact Service.
Task
Check (MTU test kit).
Contact Service.
Check fans and air supply / ventilation
ducts.
Task
Check signal ring position of service in‐
dicator (→ Page 165).
Contact Service.
Contact Service.
Task
Contact Service.
Task
Check signal ring position of service in‐
dicator (→ Page 165).
Replace (→ Page 146).
Contact Service.