________________________________________________________________________________________
| Home / Engines / Kubota Engines / Kubota V1502 |
Kubota V1502 Troubleshooting
| Engine Model: Kubota V1502 |
| Engine Type: 4-stroke 4-cylinder water-cooled diesel engine |
| Total Displacement: 90.7 cu.in (1.5 L) |
| Rated Engine Power: 34 Hp (25.4 kW) at 2800 rpm |
| Fuel System: Indirect fuel injection |
| Engine hard to start or will not start |
Fuel filter element is clogged - Replace the filter element.
Air in fuel tank - Bleed fuel tank.
Fuel injection nozzles are dirty or defective - If necessary, replace with a new nozzle.
Damaged fuel injection pump - Install a new fuel pump or repair.
Valve timing is improper - Correct or replace timing gear.
Restricted fuel pipes - Service or replace fuel pipes.
Wrong injection timing - Check injection timing adjustment.
Worn cylinder or piston rings - Change faulty components.
| Diesel starts and stalls immediately |
Fuel filter plugging - Clean the filter element.
Fuel injection pump malfunction - Repair or change injection pump.
Dirty air cleaner - Clean or replace the element.
Incorrect nozzle opening pressure - Set it correctly.
| Engine stops running suddenly |
Incorrect adjustment of fuel injection pump timing - Check the fuel injection pump timing adjustment.
Fuel filter plugging - Clean the filter element.
Engine is not preheated - Engine is not warmed up to the required temperature.
Stuck or burnt injection nozzle - Repair or replace injection nozzles.
| Engine stalls when idling |
Incorrect low idle setting - Adjust low idling as recommended.
The valve clearance is not adjusted - Correct valve clearance.
Fuel injection pump damage - Repair or change injection pump.
| Engine power is too low |
Defective injection nozzle - If necessary, replace with a new nozzle.
Clogged fuel hoses or lines - Fuel lines and hoses need to be cleaned.
Dirty air filter - Change air filter element.
Defective cylinder head gasket - Install a new gasket.
Wrong injection timing - Adjust according to specifications.
Faulty fuel injection pump - Change pump or rebuild it.
Any of moving engine parts is worn - Change or repair damaged parts.
| Engine is overheated |
Clogged radiator core or damaged radiator cap - Install new cap or clean radiator.
Lack of engine coolant - Refill to the correct level and inspect system for leaks.
Damaged or worn fan belt - Belt replacement is recommended.
Engine oil insufficient - Check and refill engine oil.
Cylinder head gasket is defective - Replace the gasket as required.
Injection timing is out of adjustment - Set the injection timing correctly.
| Insufficient oil pressure |
Low oil level - Add oil to the engine crankcase.
Defective oil pump - Check and replace if necessary.
Oil filter is dirty - Clean or replace engine oil filter element.
Stuck or defective relief valve - Change or service relief valve.
Clearance of crankshaft bearing is excessive - Inspect and change or repair worn components.
Excessive crankpin bearing clearance - Inspect and change or repair worn components.
| Excessive oil consumption |
Oil leaks: Damaged seals or gaskets - Replace to repair leaks.
Improper oil viscosity - Use oil of proper viscosity.
Worn or broken piston rings - Piston rings replacement required.
Worn valve guides and valve stems - Valves need to be changed.
Cylinder liners or pistons are damaged - Inspect liners and pistons, change as necessary.
| Abnormal engine noise or knocking |
Engine is not warmed up to the required temperature - Warm up the engine.
Not enough engine oil - Add oil to the engine crankcase.
Fuel injection pump timing is not adjusted - Adjust as recommended.
Piston wear or scoring - Pistons need to be replaced.
Connecting rod is defective or misaligned - Alignment procedure or replacement is required.
| Starter turns slowly |
Low battery power - Recharge the battery.
Battery won’t hold charge - Service charging system or replace battery.
Terminals are faulty or battery cables are disconnected - Check cable connections and change or clean terminals.
| Starter doesn't crank |
Battery is drained or worn - Need to charge or replace the battery.
Wiring is improperly connected or disconnected - Check wiring and connect properly.
Battery voltage is low - Battery is drained, recharge it.
Damaged starter motor - Repair or change starter.
________________________________________________________________________________________
________________________________________________________________________________________
| Engines Technical Specifications |