OMSU31337

Engine Troubleshooting


Engine hard to start or not starting	Incorrect starting procedure	Verify correct procedure Starting the Engine in Section Operating the Engine.
	TPO engaged during starting	Turn PTO switch OFF.
	Fuel shut-off knob engaged (5075E Tractors with Bosch A4000 injection pump¹)	Push knob downward and then move it totally to the front.
	Out of fuel	Fill fuel tank with fuel.
	Air in fuel system	Bleed (drain air from) final fuel filter.
	Fuel filter hand pump raised	Push manual pump downwards.
	Oil in crankcase too viscous	Use oil of proper viscosity.
	Water, dirt, or air in fuel system.	Drain, clean, fill and bleed the system.
	Clogged fuel filter	Replace filter element.
	Dirty or faulty injectors	See your John Deere Dealership.

Engine knocks	Lack of engine oil	Replenish oil to proper level.
	Injection pump out of timing	See your John Deere Dealership.

Engine operating irregularly or stalling frequently	Low coolant temperature	See your John Deere Dealership.
	Clogged fuel filter	Replace filter element.
	Water, dirt, or air in fuel system.	Drain, clean, fill and bleed the system.
	Dirty or faulty injectors	See your John Deere Dealership.
	Wrong type of fuel	Use correct fuel.

Lack of power	Engine overloaded	Reduce load or shift down to slower gear.
	Air intake filter restriction	Carry out filter service.
	Clogged fuel filter	Replace filter element.
	Very low engine temperature	Remove and check thermostat valve.
	Dirty or faulty injectors	See your John Deere Dealership.
	Injection pump out of timing	See your John Deere Dealership.
	Restricted fuel line	Examine and clean fuel line.
	Inadequate ballasting	See Ballasting Section, in this manual.

Low oil pressure	Low oil level	Replenish oil to proper level.
	Incorrect oil type	Add oil with correct viscosity.

High oil consumption	Oil in crankcase too light	Use correct oil viscosity.
	Oil leaks	Check for leaks and correct if necessary.
	Crankcase vent tube restricted	Clean out vent tube.
	Engine break-in period	See Break-In Period Section, in this manual.

Engine emits white smoke	Improper type of fuel	Use correct fuel.
	Low engine temperature	Warm up engine to normal operating temperature.
	Thermostat valve defective	Remove and check thermostat valve.
	Defective injection pump tubes	See your John Deere Dealership.
	Engine out of time	See your John Deere Dealership.

Engine emits black or gray smoke through exhaust pipe	Improper type of fuel	Use correct fuel.
	Air filter dirty or restricted	Carry out air filter cleaning.
	Engine overloaded	Reduce load or shift down to slower gear.
	Defective injection pump tubes	See your John Deere Dealership.
	Engine out of synch	See your John Deere Dealership.

Engine overheats	Dirt in radiator core or tubes	Clean dirt
	Engine overloaded	Reduce load or shift down to slower gear.
	Engine oil level low	Check oil level, add if necessary.
	Low coolant level	Fill radiator to correct level, check radiator and hoses for loose and leaking connections.
	Loose fan belt	Adjust belt tension.
	Cooling system needs flushing	Drain, flush, and refill cooling system.
	Thermostat valve defective	Remove and check thermostat valve.

High fuel consumption	Improper type of fuel	Use correct fuel.
	Air filter dirty or restricted	Carry out filter service.
	Engine overloaded	Reduce load or shift down to slower gear.
	Dirty injection nozzles	See your John Deere Dealership.
	Engine out of time	See your John Deere Dealership.
	Low engine temperature	Check thermostat valve.
	Too much ballast	Adjust ballasting.
	Crankcase vent tube restricted	Clean out vent tube.

Engine does not switch off	Incorrect engine closedown procedure	Verify correct procedure Shutting off the Engine in Section Operating the Engine.
	Fuel shut-off knob improperly engaged (5075E Tractors with Bosch A4000 injection pump¹)	Pull fuel shut-off knob forward and then insert in support slot.

¹ Identify injection pump installed on tractor according to reference in Fuel System Components - 5075E, in Service Section of this manual.

GB52027,000005C-19-20140701