John Deere 3179DF Troubleshooting
| Engine Model: John Deere 3179DF |
| Engine Type: 4-stroke in-line 3-cylinder liquid-cooled diesel |
| Total Displacement: 179.5 cu.in (2.9 L) |
| Rated Engine Power: 52-60 Hp (39-45 kW) at 2500 rpm |
| Fuel System Type: Direct Injection |
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| Engine starts up hard or won't start |
Fuel filter element is dirty - Service the filter.
Air in fuel tank - Bleed fuel tank.
Fuel injection nozzles are damaged or dirty - Clean or replace injection nozzles.
Fuel injection pump damage - Install a new fuel pump or repair.
Improper valve timing - Use correct valve timing adjustment.
Fuel pipes are clogged - Service or change fuel pipes.
Injection timing is wrong - Adjust according to specifications.
Piston rings and cylinder are worn - Change faulty parts.
Fuel filter plugged - Replace the filter element.
Fuel injection pump is faulty - Replace injection pump or repair it.
Dirty air filter element - Clean or replace the element.
Nozzle opening pressure is not adjusted - Adjust as recommended.
| Engine shuts off suddenly while running |
Wrong setting of fuel injection pump timing - Set the fuel pump timing correctly.
Fuel filter plugging - Service the filter.
Engine is not warmed up to the required temperature - Warm up engine as required.
Defective or stuck injection nozzles - Clean or replace injection nozzles.
Incorrect low idle speed adjustment - Adjustment required.
Excessive valve clearance - Have it adjusted.
Defective fuel injection pump - Install a new pump or rebuild.
Clogged or defective injection nozzles - Check injection nozzles and replace if required.
Fuel lines or hoses clogging - Clean fuel system lines and hoses.
Clogged air filter - Change air filter element.
Defective cylinder head gasket - Replace the gasket as required.
Unadjusted injection timing - Adjust injection timing as required.
Fuel injection pump is broken - Rebuild or replace pump.
One of moving engine parts has broken - Change or repair damaged parts.
Damaged radiator cap or dirty radiator core - Replace cap or clean radiator.
Lack of coolant in cooling system - Add coolant fluid and inspect the cooling system for leaks.
Fan belt slipping or worn - Install new fan belt.
Low engine oil level - Fill up the oil to required level.
Damaged cylinder-head gasket - Cylinder-head gasket replacement required.
Wrong injection timing - Set up as recommended.
| Insufficient oil pressure |
Oil level is low - Fill up the engine oil.
Oil pump is worn or damaged - Check and replace if necessary.
Oil filter clogged - Replace or service engine oil filter.
Stuck or defective relief valve - Change or service relief valve.
Excessive oil clearance of crankshaft bearing - Inspect and change or repair worn components.
Crankpin bearing clearance is excessive - Inspect and replace or repair faulty components.
| Engine consuming too much oil |
External oil leaks: Defective seals or gaskets - New components need to be installed.
Oil viscosity is wrong - Fill up with the correct oil viscosity.
Damaged or seized piston rings - Piston rings need to be replaced.
Worn valve guides and valve stems - Valves must be replaced.
Scuffed cylinder liners or pistons - Inspect pistons and liners, change as required.
| Abnormal engine noise or knocking |
Engine is not preheated - Warm up to required temperature.
Lack of engine oil - Fill up the engine oil.
Incorrect adjustment of fuel injection pump timing - Set the fuel pump timing correctly.
Pistons are scored or worn - Replace the pistons as required.
Connecting rod is worn or misaligned - Need to align or replace the connecting rod.
Low battery output voltage - Battery needs to be recharged.
Battery discharges quickly - Service battery or change it.
Faulty battery terminals or disconnected cables - Check cable connections and change or clean terminals.
| Starter motor is not working |
Battery is discharged or defective - Battery needs to be recharged or replaced.
Wiring is incorrectly connected or disconnected - Inspect wiring and connect correctly.
Low battery voltage - Recharge the battery.
Defective starter motor - Starter needs to be changed.
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