Engine Troubleshooting - Northern Lights OM-C3 Operator's Manual

Engine Troubleshooting

NOTE: If using BIODIESEL blends above B20, the
possibility of some of the symptoms listed below,
such as power loss, could increase.
Symptom
Engine cranks but will not start
Engine hard to start or will not start Engine starting under load.
Engine knocks
Troubleshooting
NOTE: Before troubleshooting the engine, first retrieve
Problem
Incorrect starting procedure.
No fuel.
Exhaust restricted.
Fuel filter plugged or full of water.
Injection pump not getting fuel or air
in fuel system.
Faulty injection pump or nozzles.
Improper starting procedure.
No fuel.
Air in fuel line.
Cold weather.
Slow starter speed.
Crankcase oil too heavy.
Improper type of fuel.
Water, dirt, or air in fuel system.
Clogged fuel filter.
Dirty or faulty injection nozzles.
Electronic fuel system problem
Injection pump shut-off not reset.
Low engine oil level.
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any fault codes on the diagnostic gauge display and
perform the corrective actions. (See information
later in this section.) If any problems remain, use
the following charts to solve engine problems.
Solution
Verify correct starting procedure.
Check fuel in tank and manual shut-off
valve.
Check and correct exhaust restriction.
Replace fuel filter or drain water from
filter.
Check fuel flow at supply pump or
bleed fuel system.
Consult authorized diesel repair
station for repair or replacement.
Disengage PTO (if equipped).
Review starting procedure.
Check fuel tank.
Bleed fuel line.
Use cold weather starting aids.
See "Starter Cranks Slowly".
Use oil of proper viscosity.
Consult fuel supplier; use proper type
fuel for operating conditions.
Drain, flush, fill, and bleed system.
Replace filter element.
Have authorized servicing dealer or
engine distributor check injectors.
See your authorized servicing dealer
Turn key switch to "OFF" then to "ON".
Add oil to engine crankcase.
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