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| Home / Engines / Kubota Engines / Kubota V1902 |
Kubota V1902 Troubleshooting
| Engine Model: Kubota V1902 |
| Engine Type: 4-stroke 4-cylinder water-cooled diesel engine |
| Total Displacement: 113.6 cu.in (1.9 L) |
| Rated Engine Power: 43 Hp (32.1 kW) at 2800 rpm |
| Fuel System: Indirect fuel injection |
| Engine starts hard or won't start |
Fuel filter plugging - Clean or replace the filter.
Air in the fuel pipes - Bleed the fuel pipes.
Clogged or burnt injection nozzle - Replace injection nozzles.
Fuel injection pump is not operating properly - Install a new pump or rebuild.
Valve timing is incorrect - Correct or replace timing gear.
Plugged fuel pipes - Service fuel pipes.
Improper injection timing - Check injection timing adjustment.
Worn piston rings and cylinder - Replace faulty components.
| Engine stalls after starting |
Fuel filter plugging - Service or replace the filter.
Fuel injection pump is damaged - Replace injection pump or repair it.
Plugged air filter - Clean or replace element.
Nozzle opening pressure is incorrect - Adjust according to specifications.
| Engine stalls after running |
Improper setting of fuel injection pump timing - Adjust as recommended.
Fuel filter plugging - Filter maintenance required.
Coolant temperature is low - Warm up the engine.
Injection nozzles are burnt or jammed - Clean or replace injection nozzles.
| Engine shuts off while idling |
Low idle speed set incorrectly - Correct the settings.
Incorrect valve clearance - Adjustment procedure required.
Fuel injection pump is not operating properly - Install a new fuel pump or repair.
| Reduced engine power |
Clogged injection nozzle - Replace injection nozzles.
Fuel lines or hoses clogging - Fuel lines and hoses need to be cleaned.
Dirty air filter - Service or replace the air filter.
Cylinder head gasket is worn - Replace the gasket as required.
Wrong injection timing - Use correct injection timing adjustment.
Fuel injection pump is defective - Replace or rebuild injection pump.
One of moving engine parts has broken - Repair or replace defective components.
| Engine overheating |
Clogged radiator fins or leaking radiator cap - Clean radiator or install new cap.
Low engine coolant - The cooling system needs to be refilled and checked for faults.
Fan belt is loose or defective - Replace the fan belt.
Lack of engine oil - Check oil level and add oil as required.
Cylinder head gasket defective - Install new cylinder head gasket.
Injection timing is wrong - Check injection timing adjustment.
| Low oil pressure |
Low oil level - Add oil as required.
Oil pump is worn or damaged - Repair or change.
Engine oil filter is plugged - Clean or change engine oil filter.
Worn or dirty relief valve - Relief valve need to be replaced or cleaned.
Excessive oil clearance of crankshaft bearing - Test and repair or replace worn parts.
Crankpin bearing clearance is excessive - Test and repair or replace worn parts.
| Diesel engine using too much oil |
Oil leakage: Seals or gaskets are defective - Replace worn parts to avoid leaks.
Incorrect oil viscosity - Use correct viscosity oil.
Stuck or worn piston rings - Have piston rings replaced.
Damaged valve guides or valve stems - Change the valves.
Damaged cylinder liners or pistons - Inspect liners and pistons, replace as necessary.
| Engine noises or knocks |
Engine is cold - Warm up engine as required.
Lack of engine oil - Check and refill engine oil.
Wrong setting of fuel injection pump timing - Adjust fuel injection pump as required.
Pistons are worn or scored - Install new pistons.
Connecting rod is defective or not aligned - Connecting rod must be aligned or replaced.
| Starter turns slowly |
Low battery capacity - Battery needs to be recharged.
Battery runs out quickly - Service battery or change it.
Wires are disconnected or battery terminals are corroded - Connect wires properly or change terminals.
| Starter motor won't turn |
Battery is drained or worn - Recharge or change battery.
Wiring is incorrectly connected or disconnected - Inspect wiring and connect correctly.
Low battery output - Battery is drained, recharge it.
Faulty starter motor - Repair or replace starter.
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