6 Troubleshooting
6.1 Troubleshooting
Engine does not turn when starter is actuated
Component
Probable Cause
Task
Battery
Low or defective
Charge or replace (see manufacturer's
documentation).
Cable connections defective
Check if cable connections are proper‐
ly secured (see manufacturer's docu‐
mentation).
Starter
Engine wiring or starter defective
Check if cable connections are proper‐
ly secured, contact Service.
Engine wiring
Defective
Check (→ Page 128).
Engine/generator
control system
Secure seating of assemblies or con‐
nectors not provided
Perform visual inspection (see manu‐
facturer's documentation).
Engine governor
Plug-in connections are loose
Check plug-in connections
(→ Page 130).
Engine
Running gear blocked (engine cannot
be barred manually)
Contact Service.
Engine turns but does not fire
Component
Probable Cause
Task
Starter
Poor rotation by starter: Battery low or
defective
Charge or replace battery (see manu‐
facturer's documentation).
Engine wiring
Defective
Check (→ Page 128).
Fuel system
Not vented
Vent fuel system (→ Page 85).
Engine governor
Defective
Contact Service.
Engine fires unevenly
Component
Probable Cause
Task
Fuel injection equip‐
ment
Injector defective
Replace (→ Page 78).
Engine wiring
Defective
Check (→ Page 128).
Fuel system
Not vented
Vent fuel system (→ Page 85).
Engine governor
Defective
Contact Service.
Engine does not reach nominal speed
Component
Probable Cause
Task
Fuel supply
Fuel prefilter clogged
Replace.
Fuel filter clogged
Replace (→ Page 86).
Air supply
Air filter clogged
Clean.
Fuel injection equip‐
ment
Injector defective
Replace (→ Page 78).
M015675/05E 2011-10 | Troubleshooting | 41
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