6.2 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 properly
secured (see manufacturer's documen-
tation).
Starter
Engine wiring or starter defective
Check if cable connections are properly
secured, contact Service.
Engine wiring
Defective
Check (→ Page 133).
Engine/generator
control system
Secure seating of assemblies or connec-
tors not provided
Perform visual inspection (see manufac-
turer's documentation).
Engine Governor
Plug-in connections are loose
Check plug-in connections (→ Page 135).
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 manufac-
turer's documentation).
Engine wiring
Defective
Check (→ Page 133).
Fuel system
Not vented
Vent fuel system (→ Page 94).
Engine Governor
Defective
Contact Service.
Engine fires unevenly
Component
Probable Cause
Task
Fuel injection equip-
ment
Injector defective
Replace (→ Page 85).
Injection pump defective
Replace (→ Page 82).
Engine wiring
Defective
Check (→ Page 133).
Fuel system
Not vented
Vent fuel system (→ Page 94).
Engine Governor
Defective
Contact Service.
Engine does not reach nominal speed
Component
Probable Cause
Task
Fuel supply
Fuel prefilter clogged
Replace (→ Page 102).
Easy-change fuel filter clogged
Replace (→ Page 96).
Air supply
Air filter clogged
Check signal ring position of service in-
dicator (→ Page 107).
Fuel injection equip-
ment
Injector defective
Replace (→ Page 85).
Injection pump defective
Replace (→ Page 82).
Engine wiring
Defective
Check (→ Page 133).
Engine
Overloaded
Contact Service.
64 | Troubleshooting | MS15018/02E 2013-09
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