Engine

Engine hard to start, will not start.

Safety switches not activated.

See your John Deere dealer.

Fuel tank empty.

Add fuel.

Low compression.

See your John Deere dealer.

Low battery output.

Check electrolyte level and specific gravity of conventional battery. Recharge if necessary.

Excessive resistance in starting circuit.

Clean and tighten all connections on battery and starter.

Crankcase oil of too heavy viscosity.

Drain and fill crankcase with oil of proper viscosity and quality.

Use of gasoline instead of diesel fuel or improper type, or old fuel.

Drain and fill with proper type of fuel for operating conditions.

Sticking valves.

See your John Deere dealer.

Water, dirt, or air in fuel system.

Drain, flush, fill and bleed fuel system.

Dirty or faulty injectors.

See your John Deere dealer.

Plugged fuel filters.

Replace filters.

Air in fuel system.

Bleed air from fuel system. (See FUEL SYSTEM-BLEEDING in Engine and Drive Train section.)

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Engine knocks.

Low coolant temperature from incorrect or defective thermostats.

Replace thermostats.

Loose or failed main bearing or connecting rod bearing, worn pistons and cylinders.

See your John Deere dealer.

Insufficient oil level.

Add oil of proper viscosity and quality.

Clogged air intake.

Clean air intake.

Injection nozzle valve sticking.

See your John Deere dealer.

Air in fuel system.

Bleed fuel system.

Engine runs irregularly or stalls frequently.

Low coolant temperature.

Run engine until sufficiently warm. Also check thermostats.

Clogged fuel filters or strainers.

Replace filters elements and bleed system. Clean strainers.

Bent push rods or sticky valves.

See your John Deere dealer.

Water, dirt, or air in fuel system.

Drain, flush, fill, and bleed system. Clean strainers.

Injection pump out of time.

See your John Deere dealer.

Dirty or faulty injectors.

See your John Deere dealer.

Fuel supply or return hoses kinked, pinched, or obstructed.

Check for kinks, pinches, or obstruction in all hoses.

Water in system.

See WATER SEPARATOR PRIMARY FUEL FILTER-DRAINING in Prestarting Checks section.

Clogged air intake.

Clean air intake.

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Lack of power.

Engine overloaded.

Reduce ground speed.

Intake air restrictions.

Clean air cleaner.

Faulty or improper thermostats.

Replace thermostats.

Improper valve clearance.

See your John Deere dealer.

Fuel filters plugged.

Replace fuel filters.

Unsatisfactory fuel.

Use fresh fuel of proper type.

Overheated engine.

See ENGINE OVERHEATS in this section.

Lost rotation in hydro lever linkage.

Tighten pivots and check for binding.

Plugged or restricted fuel tank vent.

Inspect and clean fuel tank vent.

Dirty or faulty injectors.

See your John Deere dealer.

Turbocharger not functioning.

See your John Deere dealer.

Fuel supply or return hoses kinked, pinched, or obstructed.

Check for kinks, pinches, or obstruction in all hoses.

Charge air cooler leaking.

Replace charge air cooler.

Air filter restriction warning is displayed.

Filter(s) plugged.

Replace filter(s).

Faulty indicator.

See your John Deere dealer.

Plugged vent on sending unit.

Replace sending unit.

High altitude operation.

Engine loses horsepower with increases in altitude. Use proper type of fuel for high altitude.

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Engine overheats.

Engine overloaded.

Reduce ground speed.

Low coolant level.

Fill surge tank with coolant to the proper level. Check hoses and radiator for leaks or loose connections.

Faulty radiator cap.

Have service technician check.

Leaking head gasket.

See your John Deere dealer.

Engine timed too late.

See your John Deere dealer.

Dirty rotary screen.

Clean screen and trash expeller.

Dirty cooling system core(s) (radiator, hydrostatic oil, air conditioner condenser, fuel cooler) or screens.

Remove all foreign matter from exterior of core(s) and screens. Steam clean periodically. Check screen seals.

Defective thermostats.

Remove and check.

Defective fan belt.

Replace worn belt.

Wrong oil viscosity.

Change to proper oil viscosity.

Cooling system limed up.

Flush and fill radiator.

Operating with water only.

Fill with proper coolant.

Engine temperature below normal.

Defective thermostats, gauge or sender unit.

Remove and check.

Low oil pressure.

Low oil level.

Check crankcase oil level on dipstick and add oil if necessary.

Improper type of oil.

Drain and fill crankcase with oil of proper viscosity and quality.

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Engine uses excessive oil.

Oil leaks or engine overheating.

Check for leaks in lines around gaskets and drain plugs.

Improper oil viscosity.

Drain and fill crankcase with oil of proper viscosity and quality.

Excessive engine speed.

See your John Deere dealer.

High oil pressure.

See your John Deere dealer.

Restricted air intake system.

Check air intake system for restrictions. Verify air cleaner elements are clean.

Engine uses excessive fuel.

Improper type of fuel.

Use proper type fuel for operating conditions.

Engine out of time.

See your John Deere dealer.

Clogged or dirty air cleaner.

Clean or replace air cleaner.

Engine overloaded.

Reduce load or reduce ground speed.

Dirty or faulty injectors.

See your John Deere dealer.

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Engine emits black or gray exhaust smoke.

Improper type fuel.

Use proper type of fuel for operating conditions.

Engine out of time.

See your John Deere dealer.

Clogged or dirty air intake system.

Check air intake system for restrictions. Verify air cleaner elements are clean.

Engine overloaded.

Reduce ground speed.

Defective muffler.

Check the muffler for possible damage which might create backpressure.

Dirty or faulty injectors.

See your John Deere dealer.

Air in fuel system.

Bleed fuel system. Check all connections and fuel tank level.

Charge air piping disconnected or leaking.

Repair.

Engine emits white exhaust smoke.

Cold engine.

Warm engine to normal operating temperatures.

Engine out of time.

See your John Deere dealer.

Improper type of fuel.

Use fuel which has recommended cetane number.

Thermostats defective or too cold or wrong temperature rating.

Remove and check thermostat.

Battery will not accept charge.

Defective battery.

Replace battery.

Loose or damaged alternator belt.

Inspect belt and tensioner, replace as necessary.

Loose or corroded connections.

Clean and tighten battery connections.

Alternator or voltage regulator not functioning properly.

See your John Deere dealer.

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Starter cranks slowly or will not crank.

Low battery output.

See your John Deere dealer.

Safety switch not activated.

Position hydro lever in neutral.

Loose or corroded harness or battery connections.

Clean and tighten loose connections.

Starter solenoid defective.

Repair or replace.

Cold weather.

See COLD WEATHER OPERATION in Operating the Machine section.

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