Mitsubishi L2C Troubleshooting
| Engine Model: Mitsubishi L2C |
| Engine Type: 4-cycle 2-cylinder naturally aspirated liquid-cooled diesel |
| Total Displacement: 32.8 cu.in (0.54 L) |
| Rated Engine Power: 12 Hp (9 kW) at 3600 rpm |
| Fuel System Type: Indirect injection |
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| Diesel hard to start or doesn't start |
Fuel filter plugging - Filter maintenance required.
Air in the fuel lines - Bleed the fuel lines.
Fuel injection nozzles are clogged or faulty - Replace injection nozzles.
Faulty fuel injection pump - Install a new fuel pump or repair.
Unadjusted valve timing - Adjust or replace timing gear.
Fuel pipes clogging - Service fuel pipes.
Incorrect injection timing - Set up as recommended.
Piston rings and cylinder are worn - Replace faulty components.
| Engine stalls after starting |
Fuel filter plugging - Replace filter element.
Fuel injection pump malfunction - Rebuild or replace pump.
Clogged air cleaner - Change air filter element.
Incorrect nozzle opening pressure - Adjust according to specifications.
| Engine stops suddenly during operation |
Improper setting of fuel injection pump timing - Adjust as recommended.
Dirty fuel filter - Service or replace the filter.
Coolant temperature is low - Warm up engine as required.
Defective or stuck injection nozzles - Check injection nozzles and replace if required.
| Engine shuts off while idling |
Low idle speed setting is incorrect - Adjust low idle speed.
Valve out of adjustment - Adjust valve clearance according to specifications.
Fuel injection pump failure - Replacement or repair required.
Faulty or dirty injection nozzles - Test injection nozzles and change if necessary.
Clogged fuel hoses or lines - Service fuel lines and hoses.
Intake air restriction - Clean or change.
Cylinder head gasket is blown - Replace the gasket as required.
Injection timing is out of adjustment - Adjust injection timing as required.
Faulty fuel injection pump - Repair or install a new fuel pump.
Any of moving engine parts is worn - Replace or repair damaged components.
Faulty radiator cap or dirty radiator fins - Replace cap or clean radiator.
Lack of engine coolant - Add coolant and check the components of cooling system.
Damaged or worn fan belt - Install new fan belt.
Engine oil level low - Fill the crankcase with engine oil.
Leaking cylinder head gasket - Replace cylinder head gasket.
Wrong injection timing - Adjust as recommended.
Engine oil insufficient - Fill up the engine oil.
Oil pump is defective - Check and replace if necessary.
Clogged oil filter - Clean or change engine oil filter.
Stuck or worn relief valve - Change or service relief valve.
Clearance of crankshaft bearing is excessive - Inspect and change or repair worn components.
Excessive oil clearance of crankpin bearing - Inspect and change or repair worn components.
| Diesel engine using too much oil |
Oil leaking: Worn gaskets or seals - Install new components.
Crankcase oil too light - Fill up with the proper oil viscosity.
Piston rings are stuck or worn - Have piston rings replaced.
Valve stems and guides are worn - Install new valves.
Worn pistons or cylinder liners - Check liners and pistons, replace as required.
| Engine knocking sound or abnormal noise |
Coolant temperature is low - Normalize the temperature by warming up the engine.
Engine oil level low - Check oil level and add oil as required.
Wrong setting of fuel injection pump timing - Set up as recommended.
Pistons are broken or worn - Pistons need to be replaced.
Connecting rod is defective or misaligned - Align or change connecting rod.
Battery voltage is low - Battery needs to be recharged.
Battery runs out quickly - Service battery or replace it.
Disconnected wires or corroded battery terminals - Connect cables properly or replace terminals.
Battery is discharged or defective - Charge or replace the battery.
Disconnected or improperly connected wiring harness - Inspect battery wiring harness and connect as required.
Low battery output - Battery needs to be recharged.
Starter motor is faulty - Replace or repair starter.
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