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
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