Troubleshooting - 47
S
YMPTOM
:
P
OSSIBLE
C
AUSE
:
Starter will not engage.
Selector lever is not in the park position.
PTO switch is engaged.
Neutral start switch is out of adjustment.
Dead battery.
Blown fuse in start circuit.
Faulty relay in start circuit.
Electrical problem in start circuit.
Engine cranks, but won’t start.
Faulty fuel pump.
Insuf
fi
cient fuel level.
Fuel shut-off valve is turned off.
Cold weather - let glow plugs cycle a second time.
Glow plugs not working.
Plugged fuel
fi
lters.
Obstruction in the fuel line.
Poor engine compression.
Fuel shutoff solenoid not working.
Faulty injector pump.
Engine runs rough.
Plugged or partially plugged fuel
fi
lters.
Plugged or partially plugged air
fi
lters.
Fuel cap vent is plugged or dirty (All diesel engines and
Gasoline engines from Serial # 2929-4285).
Stale fuel, dirty fuel, insuf
fi
cient fuel level.
Faulty fuel pump.
Dirty or faulty fuel injectors.
Faulty injector pump.
Engine is low in power.
Plugged or partially plugged fuel
fi
lters (most common).
Plugged or partially plugged air
fi
lters.
Low cylinder compression.
Dirty or faulty fuel injectors/pump.
Engine overheats.
Dirty radiator screen.
Low coolant level.
Debris in engine compartment.
Defective radiator cap.
Defective thermostat.
Loose alternator/fan belt.
Oil light comes on when running.
Low in oil.
Faulty oil sender.
Faulty oil pump.
E
NGINE
TROUBLESHOOTING