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| Home / Engines / Kubota Engines / Kubota D1302 |
Kubota D1302 Troubleshooting
| Engine Model: Kubota D1302 |
| Engine Type: 4-stroke 3-cylinder water-cooled diesel engine |
| Total Displacement: 79.3 cu.in (1.3 L) |
| Rated Engine Power: 30 Hp (22.4 kW) at 2800 rpm |
| Fuel System: Indirect fuel injection |
| Diesel engine hard to start or doesn't start |
Fuel filter element clogging - Change filter element.
Air in the fuel pipes - Bleed the fuel pipes.
Clogged or defective injection nozzles - Clean or change injection nozzles.
Defective fuel injection pump - Change pump or rebuild it.
Valve timing is incorrect - Correct or replace timing gear.
Fuel pipes are clogged - Clean fuel pipes.
Incorrect injection timing - Check injection timing adjustment.
Excessive wear of piston rings and cylinder - Replace faulty parts.
| Engine starts and then shuts off |
Fuel filter element is dirty - Service the filter.
Fuel injection pump is defective - Rebuild or replace pump.
Intake air restriction - Clean or change.
Incorrect nozzle opening pressure - Set it correctly.
| Engine shuts off suddenly while running |
Improper fuel injection timing - Adjust fuel injection pump as required.
Fuel filter plugged - Clean the filter element.
Low coolant temperature - Normalize the temperature by warming up the engine.
Injection nozzles are stuck or clogged - Clean or change injection nozzles.
| Engine stops while idle |
Incorrectly set low idle speed - Normalize low idle speed.
Incorrect valve clearance - Correct valve clearance.
Fuel injection pump is broken - Rebuild or install a new injection pump.
| Loss of engine power |
Defective injection nozzle - Check and replace nozzles if required.
Dirty fuel lines or hoses - Clean fuel system hoses and lines.
Dirty air cleaner - Air filter maintenance required.
Cylinder head gasket is defective - Gasket should be replaced.
Injection timing is incorrect - Use correct injection timing adjustment.
Fuel injection pump is damaged - Change pump or rebuild it.
Any of moving engine parts is worn - Replace or repair damaged components.
| Engine overheats |
Clogged radiator fins or damaged radiator cap - Clean radiator or replace cap.
Lack of coolant in cooling system - Add coolant fluid and inspect the cooling system for leaks.
Broken or loose fan belt - Fan belt must be replaced.
Engine oil insufficient - Check oil level and add oil as required.
Blown cylinder head gasket - Install a new gasket.
Incorrect injection timing - Adjust as recommended.
| Oil pressure too low |
Engine oil level low - Checking oil level and add if necessary.
Defective oil pump - Replace as required.
Oil filter is clogged - Clean or change engine oil filter.
Stuck or worn relief valve - Replace or service relief valve.
Crankshaft bearing clearance is excessive - Check and change or repair defective parts.
Crankpin bearing clearance is excessive - Inspect and replace or repair faulty parts.
| Excessive engine oil consumption |
Oil leakage: Worn seals or gaskets - Replace to repair leaks.
Oil viscosity is incorrect - Use oil of correct viscosity.
Damaged or seized piston rings - Piston rings replacement required.
Worn valve guides and valve stems - Valves replacement required.
Damaged cylinder liners or pistons - Check liners and pistons, install new components as required.
| Engine knocking or noise |
Coolant temperature is low - Warm up the engine.
Engine oil level is insufficient - Fill up the oil to required level.
Timing of fuel injection pump is incorrect - Set up as recommended.
Scored or worn pistons - Pistons need to be replaced.
Misaligned or defective connecting rod - Need to replace or align the connecting rod.
| Starter cranks slow |
Battery power is low - Battery is drained, charge it.
Battery is draining quickly - Battery needs to be serviced or replaced.
Disconnected wires or corroded battery terminals - Check wiring connections and replace or clean terminals.
| Starter doesn't crank |
Battery is drained or worn - Change or recharge battery.
Battery cables are disconnected or improperly connected - Inspect cables and connect properly.
Battery voltage is low - Recharge the battery.
Faulty starter motor - Starter should be changed.
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