Engine - Northern Lights M844W3 Operator's Manual

ENGINE

PROBLEM
Engine Hard to Start
or Will Not Start
Engine Runs Irregularly
or Stalls Frequently
Lack of Engine Power
Updated 2-10-20
Troubleshooting
POSSIBLE CAUSE
Improper starting procedure
No fuel
Low battery output
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
Lift pump malfunction
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
Control lever adjusted incorrectly
Improper type of fuel
Uneven compression pressure
between cylinders.
Intake air restriction
Clogged primary fuel filter element • Clean or replace filter element.
Clogged secondary fuel filter element • Replace filter element.
Injection pump not getting fuel
OM844W3 5/21
26
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.
• Repair lift pump.
• 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.
• Adjust control lever
• Consult fuel supplier and use proper type
of fuel for operating condition.
• Check cylinder compression pressure.
• Service air cleaner.
• If in sound enclosure - ensure proper
position of snorkle hose
• Have injection pump checked.