Troubleshooting; Engine Troubleshooting - Northern Lights M50C13 Operator's Manual

NOTE: If using biodiesel blends above B20, the possibility of some of the symptoms listed below, such as power loss,
could increase.
NOTE: Before troubleshooting the engine, first retrieve 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.
ENGINE
PROBLEM
Engine Cranks But Will
Not Start
Engine Hard to Start or
Will Not Start

Troubleshooting

POSSIBLE CAUSE
Incorrect starting procedure
No fuel
Exhaust restricted
Fuel filter plugged or filled with
water
Injection pump not getting fuel
or air in fuel system
Faulty injection pump or nozzles
Engine starting under load
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
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RECOMMENDATION(S)
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 Dealer for repair or
replacement
Disengage PTO (if equpped)
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 of fuel for
operating conditions
Drain, flush, fill, and bleed system
Replace filter element
Consult Authorized Dealer
Consult Authorized Dealer
Turn key switch to "OFF" then to "ON"
Add oil to engine crankcase