John Deere 6414T Troubleshooting
| Engine Model: John Deere 6414T |
| Engine Type: 4-stroke in-line 6-cylinder turbocharged liquid-cooled diesel |
| Total Displacement: 414 cu.in (6.8 L) |
| Rated Engine Power: 125-156 Hp (93-116 kW) at 2200-2500 rpm |
| Fuel System Type: Direct injection |
____________________________________________________________________________________
| Engine starts hard or doesn't start |
Clogged fuel filter - Service the filter.
Air in the fuel system - Air bleeding.
Clogged injection nozzle - Inspect nozzles and replace if necessary.
Fuel injection pump is damaged - Repair or change injection pump.
Valve timing is out of adjustment - Adjust or change timing gear.
Dirty fuel pipes - Clean or change fuel pipes.
Wrong injection timing - Use correct injection timing adjustment.
Worn cylinder or piston rings - Replace faulty components.
| Engine starts but stalls suddenly |
Dirty fuel filter - Install new filter element.
Fuel injection pump is broken - Replace or rebuild injection pump.
Clogged air filter - Clean air cleaner element.
Incorrect nozzle opening pressure - Set it correctly.
| Engine stalls while running |
Wrong setting of fuel injection pump timing - Adjust the pump as required.
Fuel filter plugging - Clean or change the filter.
Engine is not preheated - Warm up the engine.
Injection nozzles are jammed or clogged - Repair or replace injection nozzles.
Improperly adjusted low idle speed - Normalize low idle speed.
Excessive valve clearance - Adjust valve clearance.
Defective fuel injection pump - Repair or install a new fuel pump.
Clogged injection nozzle - Change fuel injection nozzles.
Clogged fuel hoses or lines - Clean fuel system hoses and lines.
Air filter element clogged - Install new air filter element.
Cylinder head gasket is defective - Gasket should be replaced.
Injection timing is incorrect - Use correct injection timing adjustment.
Fuel injection pump is broken - Repair or install a new fuel pump.
One of moving engine components has failed - Replace or repair damaged components.
Radiator core is clogged or radiator cap is leaking - Clean radiator or change cap.
Engine coolant is insufficient - Add coolant fluid to cooling system and also check it for leaks.
Loose or defective fan belt - Belt change is required.
Engine oil level low - Check oil level and add oil as required.
Cylinder-head gasket is broken - Install a new gasket.
Injection timing is incorrect - Adjust injection timing as required.
| Insufficient oil pressure |
Lack of oil - Check oil level and add oil as required.
Defective oil pump - Inspect and change as required.
Oil filter is dirty - Replace or service engine oil filter.
Relief valve is seized or worn - Change or service relief valve.
Excessive crankshaft bearing clearance - Check and replace or repair defective parts.
Clearance of crankpin bearing is excessive - Check and change or repair defective parts.
External oil leaks: Worn gaskets or seals - Change worn parts according to specifications.
Wrong oil viscosity - Use correct viscosity oil.
Stuck or worn piston rings - Have piston rings replaced.
Worn valve guides and valve stems - Replace the valves.
Worn cylinder liners or pistons - Check pistons and liners, replace as required.
Engine is cold - Normalize the temperature by warming up the engine.
Engine oil level is insufficient - Need to add engine oil.
Incorrect adjustment of fuel injection pump timing - Adjust the pump as required.
Pistons are worn or broken - Install new pistons.
Connecting rod misalignment or failure - Connecting rod needs to be replaced or aligned.
| Starter motor cranks slow |
Low battery power - Recharge the battery.
Battery discharges quickly - Service battery or replace it.
Battery cables are disconnected or terminals are faulty - Connect cables correctly or replace terminals.
Battery is discharged or worn - Change or recharge battery.
Battery wires are disconnected or incorrectly connected - Check wires and connect correctly.
Battery voltage is low - Charge the battery.
Defective starter motor - Starter needs to be replaced.
____________________________________________________________________________________
| Industrial Engines Technical Specifications |
| Car Engines Technical Specifications |
| Small Engines Technical Specifications |
| Outboard Engines Technical Specifications |
