Engine - Northern Lights OM944W3 Operator's Manual

PROBLEM
Engine Hard to Start
or Will Not Start
Engine Runs Irregularly
or Stalls Frequently
Lack of Engine Power
Troubleshooting

ENGINE

POSSIBLE CAUSE
Improper starting procedure
No fuel
Low battery condition
Excessive resistance
in starting circuit
Crankcase oil too heavy
Improper type of fuel
Water, dirt or air in fuel system
Clogged primary
fuel filter element
Clogged secondary
fuel filter element
Dirty or faulty injection nozzles
Below normal engine temperature
Clogged primary
fuel filter element
Clogged secondary
fuel filter element
Water or dirt in the fuel system
Dirty or faulty injection nozzles
Air in fuel system
Improper type of fuel
Engine overloaded
Intake air restriction
Clogged primary
fuel filter element
Clogged secondary
fuel filter element
Improper type of fuel
Overheated engine
Below normal engine temperature
Improper valve clearance
Dirty or faulty injection nozzles
OM944W3 1/23
32
RECOMMENDATION(S)
• See starting section of this manual. Take
special note of Bypass Switch operation.
• Check level of fuel in fuel tank.
• Check electrolyte level and condition.
• Clean and tighten all battery connections.
• Use oil of proper viscosity.
• Consult fuel supplier and use proper type
of fuel for operating condition.
• Drain, flush, fill and bleed system.
• Clean or replace filter element.
• Replace filter element.
• Have your dealer check injection nozzles.
• Remove and check thermostat.
• Clean or replace filter element.
• Replace secondary filter element.
• Drain, flush, fill and bleed system.
• Have your dealer check injection nozzles.
• Inspect clamps and hoses on suction side
of fuel pump for air leak.
• Consult fuel supplier and use proper type
of fuel for operating condition.
• Reduce the load.
• Service air cleaner.
• Clean or replace filter element.
• Replace filter element.
• Consult fuel supplier and use proper type of
fuel for operating conditions.
• See "Engine Overheats" in next category.
• Remove and check thermostat.
• Reset valves. Best done by dealer.
• Replace injectors. Best done by dealer.