MTU Detroit Diesel 12 V 2000 P62, Technical Publication

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66 Troubleshooting
Engine does not reach nominal speed
Component Probable Cause Task
Fuel supply shut off Open shut-off valve before fuel prefilter
completely.
Fuel prefilter clogged Replace ( → Page 120).
Fuel supply
Easy-change fuel filter clogged Replace ( → Page 112).
Injector defective Replace ( → Page 105). Fuel injection
equipment
Injection pump defective Replace ( → Page 102).
Engine wiring Defective Check ( → Page 144).
Engine
Overload Contact Service.
Engine speed not steady
Component Probable Cause Task
Injector defective Replace ( → Page 105). Fuel injection
equipment
Injection pump defective Replace ( → Page 101).
Speed sensor Defective Contact Service.
ECU Defective Contact Service.
Charge-air temperature too high
Component Probable Cause Task
Engine coolant Incorrect coolant concentration Check (MTU test kit)
Intercooler Contaminated Contact Service.
Engine room Air-intake temperature too high Check fans;
Check air supply / ventilation ducts.
Charge-air pressure too low
Component Probable Cause Task
Intercooler Contaminated Contact Service.
Exhaust turbocharger
Defective Contact Service.
Coolant leaks on intercooler
Component Probable Cause Task
Intercooler Leaking, major coolant discharge Contact Service.
MS15009/00E 06-09 © MTU