7 Troubleshooting
7.1 Troubleshooting
Engine does not turn when starter is actuated
Cause
Corrective action
Battery low or faulty
u
Charge or replace (→ manufacturer's documentation)
Battery: Cable connections faulty
u
Check that cable connections are properly secured
(→ manufacturer's documentation)
Starter: Engine cabling or starter
faulty
u
Check if cable connections are properly secured, contact Service.
Engine wiring faulty
u
Engine/generator control system:
Assemblies or connectors
possibly loose
u
Perform visual inspection (→ manufacturer's documentation)
DDEC: Plug-in connections
possibly loose
u
Check plug-in connections (→ Page 148).
Running gear blocked (engine
cannot be barred manually)
u
Contact Service.
Engine turns but does not fire
Cause
Corrective action
Poor rotation by starter: Battery
low or faulty
u
Charge or replace battery (→ manufacturer's documentation)
Engine wiring faulty
u
Air in fuel system
u
Vent fuel system (→ Page 102).
DDEC defective
u
Contact Service.
Engine fires unevenly
Cause
Corrective action
Fuel injection: Injector defective
u
Replace (→ Page 96).
Engine wiring faulty
u
Air in fuel system
u
Vent fuel system (→ Page 102).
DDEC defective
u
Contact Service.
Engine does not reach rated speed
Cause
Corrective action
Fuel prefilter clogged
u
Clean or replace filter element.
Easy-change fuel filter clogged
u
Replace (→ Page 103).
Air filter clogged
u
Check signal ring position of contamination indicator (→ Page 107).
Injector defective
u
Replace (→ Page 96).
Engine wiring faulty
u
Engine load too high
u
Contact Service.
MS150049/04E 2017-04
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