Troubleshooting; Troubleshooting 6.1 Troubleshooting - MTU 12 V 2000 P12 Operating Instructions Manual

6 Troubleshooting

6.1 Troubleshooting
Engine does not turn when starter is actuated
Component
Battery
Starter (electric)
Starter (compressed
air)
Engine wiring
Engine governor
Engine
Engine turns but does not fire
Component
Starter
Engine wiring
Fuel system
Engine governor
Engine fires unevenly
Component
Fuel injection equip‐
ment
Engine wiring
Fuel system
Engine governor
Cause
Flat or defective
Cable connections faulty
Engine wiring or starter faulty
Starting-air pressure not available
Faulty
Plug-in connections possibly loose
Blocked (engine cannot be barred
manually)
Cause
Poor rotation by starter: Battery flat or
defective
Faulty
Air in fuel system
Faulty
Cause
Injector faulty
Injection pump defective
Faulty
Air in fuel system
Faulty
Measure
Charge or replace (see manufacturer's
documentation).
Check if cable connections are proper‐
ly secured (see manufacturer's docu‐
mentation).
Check if cable connections are proper‐
ly secured, contact Service.
Check firm seating of connections,
check starting-air pressure and main
valve of compressed-air system. Con‐
tact Service.
Check (→ Page 144).
Check plug-in connections
(→ Page 147).
Contact Service.
Measure
Charge or replace battery (see manu‐
facturer's documentation).
Check (→ Page 144).
Vent fuel system (→ Page 109).
Contact Service.
Measure
Replace (→ Page 102).
Replace (→ Page 98).
Check (→ Page 144).
Vent fuel system (→ Page 109).
Contact Service.
MS150025/02E 2012-10 | Troubleshooting | 61