MTU C23R Instrucciones de operaciones Pagina 57

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Engine speed not steady
Component Cause Action
Fuel injection system Injector defective Replace (→ Page 97).
Speed sensor Defective Notify Service.
Fuel system Air in fuel system Bleed fuel system (→ Page 103).
Engine Control Unit Defective Notify Service.
Charge air temperature too high
Component Cause Action
Engine coolant Incorrect coolant concentration Check (MTU test kit).
Intercooler Dirty Notify Service.
Engine room Air-intake temperature too high Check fans and air intake/exhaust
pipes.
Charge-air pressure too low
Component Cause Action
Air supply Air filter clogged Clean.
Intercooler Dirty Notify Service.
Turbocharger Defective Notify Service.
Coolant leakage from intercooler
Component Cause Action
Intercooler Leaking, significant coolant loss Notify Service.
Black smoke from exhaust
Component Cause Action
Air supply Air filter clogged Clean.
Fuel injection system Injector defective Replace (→ Page 97).
Engine Overloaded Notify Service.
Blue smoke from exhaust
Component Cause Action
Engine oil Too much oil in engine Drain engine oil (→ Page 112).
Oil separator on crankcase venting sys-
tem dirty
Replace (→ Page 85).
Turbocharger, cylinder
head, piston rings, cyl-
inder liner
Defective Notify Service.
White smoke from exhaust
Component Cause Action
Engine Not at operating temperature Run engine to reach operating tempera-
ture.
Fuel system Water in fuel Check fuel system at fuel prefilter
M015695/03E 2013-03 | Troubleshooting | 57
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