Kubota D1803-CR-T Troubleshooting
| Engine Model: Kubota D1803-CR-T |
| Engine Type: 4-cycle 3-cylinder common rail direct injection liquid-cooled diesel |
| Total Displacement: 111.4 cu.in (1.83 L) |
| Rated Engine Power: 49.6 Hp (37 kW) at 2700 rpm |
| Aspiration Type: Turbocharged |
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| Engine hard to start or will not start |
Fuel filter element is clogged - Clean the filter element.
Air in fuel tank - Bleed fuel tank.
Dirty or damaged injection nozzles - Inspect nozzles and replace if necessary.
Fuel injection pump damage - Repair or change injection pump.
Incorrect valve timing - Use correct valve timing adjustment.
Restricted fuel pipes - Service fuel pipes.
Injection timing is improper - Adjust as recommended.
Damaged piston rings and cylinder - Replace defective parts.
| Engine starts but stops suddenly |
Fuel filter element is clogged - Clean or replace the filter.
Fuel injection pump is defective - Rebuild or replace pump.
Air filter is clogged - Service air cleaner.
Unadjusted nozzle opening pressure - Set up as recommended.
| Engine shuts off suddenly during operation |
Fuel injection timing is wrong - Adjust as recommended.
Dirty fuel filter - Install new filter element.
Low coolant temperature - Warm up the engine.
Injection nozzles are stuck or clogged - Service or change injection nozzles.
| Engine stops at low idle speed |
Improperly adjusted low idle speed - Test and adjust.
Valve clearance is not correct - Adjustment procedure required.
Fuel injection pump is defective - Rebuild or replace pump.
Clogged or burnt injection nozzle - Clean or change injection nozzles.
Fuel lines or hoses are clogged - Fuel hoses and lines must be clean.
Intake air restriction - Air filter maintenance required.
Worn cylinder head gasket - Change cylinder head gasket.
Injection timing is wrong - Adjust according to specifications.
Fuel injection pump is defective - Rebuild or replace pump.
One of moving engine parts has broken - Change or repair damaged parts.
Clogged radiator fins or damaged radiator cap - Clean radiator or change cap.
Insufficient coolant fluid - Add coolant fluid and inspect the cooling system for leaks.
Loose or defective fan belt - Install new fan belt.
Low engine oil level - Fill up the oil to required level.
Cylinder-head gasket is leaking - Change cylinder head gasket.
Injection timing is incorrect - Set up as recommended.
| Oil pressure is insufficient |
Engine oil level low - Checking oil level and add if necessary.
Oil pump is defective - Remove and inspect oil pump.
Oil filter clogging - Replace or service engine oil filter.
Stuck or defective relief valve - Change or service relief valve.
Clearance of crankshaft bearing is excessive - Inspect and change or repair worn components.
Crankpin bearing clearance is excessive - Inspect and change or repair worn components.
| Engine consuming too much oil |
Oil leaks: Seals or gaskets are wearing excessively - Change to repair leaks.
Oil viscosity is incorrect - Use oil of proper viscosity.
Worn or broken piston rings - Replace piston rings.
Worn valve stems and valve guides - Replace the valves.
Scored cylinder liners or pistons - Inspect pistons and liners, change as required.
Engine is cold - Warm up the engine.
Not enough engine oil - Fill up the engine oil.
Timing of fuel injection pump is incorrect - Set up as recommended.
Pistons are worn or scored - Replace the pistons as required.
Connecting rod is defective or not aligned - Connecting rod must be aligned or replaced.
Low battery output - Charge the battery.
Battery runs out quickly - Service battery or change it.
Bad battery terminals or disconnected wiring - Check cables and clean or change terminals.
Battery is drained or defective - Replace or charge as required.
Wiring harness is disconnected or improperly connected - Check wiring harness and connect as required.
Low battery capacity - Charge the battery.
Starter motor failure - Repair or change starter.
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