John Deere 5050 Engine hard to start or will not start

Engine hard to start or will not start Problems
  • Improper starting procedure – Review starting procedure.
  • No fuel – Check the fuel tank.
  • Air in the fuel tank – Bleed the fuel tank.
  • Hand primer is up – Push primer down.
  • Crankcase oil too heavy – Use oil of proper viscosity Improper fuel type – Consult fuel supplier; use the correct type of fuel for the operating conditions.
  • Water, dirt or air in the fuel system – Drain, rinse, fill and bleed the system.
  • Clogged fuel filter – Replace filter element.
  • Dirty or faulty injectors – Check the injectors.
  • Fuel shutoff valve closed – Open the fuel shutoff valve.

Engine knocks

  • Insufficient oil – Add oil.
  • Injection pump out of time – Check and adjust.
  • Low coolant temperature – Perform necessary maintenance.

Engine runs irregularly or stalls frequently

  • Low coolant temperature – Perform necessary maintenance.
  • Clogged fuel filter – Replace filter element.
  • Water, dirt or air in the fuel system – Drain, rinse, fill and bleed the system.
  • Dirty or faulty injectors – Check the injectors.
  • Improper fuel type – Use the correct fuel.

Below normal engine temperature

Faulty pressure gauge or temperature sensor – Check pressure gauge, sensor and conditions.

Lack of power

  • Engine overloaded – Reduce load or downshift.
  • Low fast idle speed – Check and adjust.
  • Intake air restriction – Check air filter.
  • Clogged fuel filter – Replace filter element.
  • Improper fuel type – Use the correct fuel.
  • Lower than normal engine temperature – Perform necessary maintenance.
  • Improper valve lash – Adjust the valve lash.
  • Dirty or faulty injectors – Check the injectors.
  • Turbocharger not working – Repair.
  • Exhaust manifold gasket leak – Replace gasket.
  • Implement improperly adjusted – See implement operator’s manual.
  • Clogged fuel line – Check and repair.
  • Return tube clogged – Check and repair.
  • Inadequate ballast – Adjust ballast to load.

Low oil pressure

  • Low oil level – Add oil.
  • Improper type of oil – Drain, fill the crankcase with oil of the correct viscosity and quality.

High oil consumption

  • Crankcase oil too light – Use oil of proper viscosity.
  • Oil Leaks – Check for leaks in lines, around gaskets, and at drain plugs.
  • Crankcase breather tube clogged – Clean the breather tube.

John Deere 5050D Engine emits white smoke

  • Improper Fuel – Use the correct fuel.
  • Low Engine Temperature – Warm up the engine to normal operating temperature.
  • Faulty thermostat – Replace.
  • Defective injection nozzles – Check and repair.
  • Engine out of time – Check and repair.
  • Cold start advance or light load advance not working – Check and repair.

Engine emits black or gray exhaust smoke

  • Improper fuel type – Use the correct fuel.
  • Clogged or dirty air filter – Check the air filter.
  • Engine overloaded – Reduce load or shift into low gear.
  • Dirty injection nozzles – Check and clean.
  • Engine out of time – Check and repair.
  • Turbocharger not working – Repair.

John Deere 5050D Engine overheats

  • Dirty radiator core or grilles – Remove all debris.
  • Engine overloaded – Shift to a lower gear or reduce load.
  • Low engine oil level – Check the oil level.
  • Add oil as needed.
  • Low coolant level – Fill radiator to proper level, check radiator and hoses for loose or leaks.
  • Faulty radiator cap – Replace cap. Loose or defective fan belt (s) – Adjust the tension of the belt (s).
  • The cooling system needs to be flushed – Flush the cooling system.
  • Faulty thermostat – Replace.Faulty temperature gauge or sender – Check and repair.
  • Incorrect fuel grade – Use the correct fuel.

High fuel consumption

  • Improper fuel type – Use the correct fuel.
  • Clogged or dirty air filter – Check the air filter.
  • Engine overloaded – Reduce load or downshift.
  • Implement improperly adjusted – See implement operator’s manual.
  • Low engine temperature – Check and repair.
  • Excessive ballast – Adjust ballast to load.
  • Faulty turbocharger – Replace.Restricted air intake system – Check system.
  • Crankcase breather tube clogged – Clean the breather tube.
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