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6 Troubleshooting
6.1 Troubleshooting
Engine does not turn when starter is actuated
Component
Cause
Action
Battery/UltraCaps
Low or faulty.
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, POM or starter defective. Check if cable connections are properly
secured, contact Service.
Engine wiring
Faulty
Check (→ Page 189).
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 connections(→ Page 194).
Engine
Running gear blocked (engine cannot be
barred manually).
Contact Service.
Engine turns but does not fire
Component
Cause
Action
Engine
Too cold.
Preheat (25 °C)
Starter
Poor rotation by starter: Battery/Ultra-
Caps low or defective.
Charge or replace battery/UltraCaps
(see manufacturer's documentation).
Engine wiring
Faulty
Check (→ Page 189).
Fuel system
Air in fuel system.
Vent fuel system (→ Page 122).
Engine governor
Faulty
Contact Service.
Engine fires unevenly
Component
Cause
Measure
Fuel injection equip-
ment
Injector defective.
Replace (→ Page 117).
Engine wiring
Faulty
Check (→ Page 189).
Fuel system
Air in fuel system.
Vent fuel system (→ Page 122).
Engine governor
Faulty
Contact Service.
Engine does not reach rated speed
Component
Cause
Measure
Fuel supply
Fuel prefilter clogged.
Replace
Easy-change fuel filter clogged.
Replace (→ Page 123).
Air supply
Air filter clogged.
Clean.
Fuel injection equip-
ment
Injector faulty.
Replace (→ Page 117).
MS150112/01E 2014-10
| Troubleshooting | 35
TIM-ID: 0000018860 - 005