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| Home / Engines / Kubota Engines / Kubota D1402 |
Kubota D1402 Troubleshooting
| Engine Model: Kubota D1402 |
| Engine Type: 4-stroke 3-cylinder water-cooled diesel engine |
| Total Displacement: 85.1 cu.in (1.4 L) |
| Rated Engine Power: 32 Hp (23.9 kW) at 2800 rpm |
| Fuel System: Indirect fuel injection |
| Engine starts up hard or won't start |
Fuel filter element clogging - Service the filter.
Air in fuel tank - Bleed fuel tank.
Damaged or dirty injection nozzles - Check and replace nozzles if required.
Faulty fuel injection pump - Install a new fuel pump or repair.
Valve timing is incorrect - Use correct valve timing adjustment.
Restricted fuel pipes - Service or change fuel pipes.
Wrong injection timing - Adjust injection timing as required.
Excessive wear of piston rings and cylinder - Change faulty components.
| Engine stalls after starting |
Fuel filter plugged - Clean the filter or install new filter element.
Defective fuel injection pump - Change or repair the pump.
Plugged air cleaner - Clean or replace the element.
Unadjusted nozzle opening pressure - Set it correctly.
| Engine stops running suddenly |
Improper setting of fuel injection pump timing - Adjust as recommended.
Dirty fuel filter - Service the filter.
Engine is not fully warmed up - Normalize the temperature by warming up the engine.
Stuck or clogged injection nozzle - Clean or replace injection nozzles.
| Engine stops while idling |
Wrong adjustment of low idle speed - Adjust low idle speed.
Incorrect valve clearance - Check and adjust.
Damaged fuel injection pump - Repair or replace injection pump.
| Poor engine power |
Defective injection nozzle - Check injection nozzles and replace if required.
Clogged fuel lines or hoses - Clean fuel hoses and lines.
Clogged air filter element - Clean or change.
Blown cylinder head gasket - Install new cylinder head gasket.
Incorrect injection timing - Adjust as recommended.
Faulty fuel injection pump - Replace injection pump or repair it.
Any of moving engine parts is worn - Repair or replace defective parts.
| Engine overheating |
Dirty radiator fins or faulty radiator cap - Clean radiator or change cap.
Coolant level is low - Add coolant fluid and inspect the cooling system for leaks.
Fan belt is worn or faulty - If necessary, replace the belt.
Insufficient engine oil - Fill up the oil to required level.
Cylinder head gasket is blown - Replace cylinder head gasket.
Injection timing is improper - Set the injection timing correctly.
| Low oil pressure |
Engine oil insufficient - Fill up the engine oil.
Oil pump is defective - Install a new pump.
Oil filter clogging - Change or clean engine oil filter element.
Stuck or worn relief valve - Replace or service relief valve.
Crankshaft bearing clearance is excessive - Inspect and change or repair worn components.
Crankpin bearing clearance is excessive - Test and repair or replace worn parts.
| Diesel engine consuming too much oil |
Oil leakage: Seals or gaskets are defective - Replace defective parts.
Improper oil viscosity - Fill up with the correct oil viscosity.
Seized or wear piston rings - Replace piston rings.
Valve guides or stems are damaged - Need to replace the valves.
Pistons or cylinder liners are worn - Check pistons and liners, replace as required.
| Engine knocks or noises |
Engine is not preheated - Engine is not warmed up to the required temperature.
Lack of engine oil - Check and refill engine oil.
Timing of fuel injection pump is incorrect - Set it up as required.
Worn or broken pistons - Have pistons replaced.
Connecting rod is misaligned or worn - Need to replace or align the connecting rod.
| Starter cranks slowly |
Battery power is low - Recharge the battery.
Battery will not hold charge - Service battery or change it.
Disconnected wires or corroded battery terminals - Check cables and service or change terminals.
| Starter doesn't crank |
Battery is low or faulty - Change or recharge battery.
Battery wires are disconnected or incorrectly connected - Check wires and connect correctly.
Low battery capacity - Recharge the battery.
Starter motor is faulty - Repair or replace starter.
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