Mitsubishi D04FD-TAA Troubleshooting
| Engine Model: Mitsubishi D04FD-TAA |
| Engine Type: 4-cycle inline 4-cylinder turbocharged liquid-cooled diesel |
| Total Displacement: 259.3 cu.in (4.25 L) |
| Rated Engine Power: 131 Hp (98 kW) at 2200 rpm |
| Fuel System Type: Common rail fuel injection |
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| Engine starts hard or will not start |
Fuel filter plugging - Change filter element.
There is air in the fuel system - Bleed the system.
Dirty or faulty injection nozzles - Check injection nozzles and replace if required.
Fuel injection pump damage - Rebuild or change fuel pump.
Unadjusted valve timing - Adjust or replace timing gear.
Clogged fuel pipes - Service fuel pipes.
Injection timing is incorrect - Set the injection timing correctly.
Piston rings and cylinder are worn - Replace defective components.
| Diesel starts and then shuts off |
Fuel filter element clogging - Clean or change the filter.
Fuel injection pump malfunction - Replace or repair injection pump.
Clogged air cleaner - Replace air filter element.
Incorrect nozzle opening pressure - Set up as recommended.
| Engine shuts off suddenly during operation |
Fuel injection timing is not adjusted - Set up as recommended.
Fuel filter plugging - Clean or change the filter.
Coolant temperature is low - Normalize the temperature by warming up the engine.
Injection nozzles sticking or clogged - Change or repair injection nozzles.
Incorrectly set low idle speed - Adjust as required.
The valve clearance is not adjusted - Adjust valve clearance.
Defective fuel injection pump - Rebuild or replace pump.
Faulty fuel injection nozzles - Clean or change injection nozzles.
Restricted fuel hoses or lines - Fuel hoses and lines must be clean.
Clogged air cleaner - Clean or change the filter.
Cylinder-head gasket is broken - Replace the gasket as required.
Unadjusted injection timing - Set the injection timing correctly.
Faulty fuel injection pump - Rebuild or change fuel pump.
Any of moving engine components is faulty - Replace or repair damaged components.
Dirty radiator core or faulty radiator cap - Clean radiator or install new cap.
Engine has a lack of coolant - The cooling system needs to be refilled and checked for faults.
Excessive wear of the fan belt - Install new fan belt.
Engine oil insufficient - Fill up the engine oil.
Cylinder head gasket defective - Replace the gasket as required.
Incorrect injection timing - Set up as recommended.
Low crankcase oil level - Checking oil level and add if necessary.
Worn oil pump - Repair or change.
Engine oil filter is plugged - Clean or replace engine oil filter element.
Stuck or worn relief valve - Change or clean relief valve.
Excessive crankshaft bearing clearance - Inspect and replace or repair faulty components.
Excessive crankpin bearing clearance - Test and replace or repair worn components.
Oil leaking: Seals or gaskets are wearing excessively - Install new components.
Wrong oil viscosity - Use proper viscosity oil.
Stuck or worn piston rings - Replace piston rings.
Valve guides and stems are worn - Replace defective valves.
Pistons or cylinder liners are scored - Check liners and pistons, change as required.
Engine has not warmed up to the recommended temperature - Warm up to required temperature.
Insufficient engine oil - Fill the crankcase with engine oil.
Fuel injection pump timing is wrong - Adjust fuel injection pump as required.
Worn or broken pistons - Replace the pistons.
Connecting rod misalignment or failure - Need to change or align the connecting rod.
Low battery output voltage - Battery is drained, charge it.
Battery runs out quickly - Service battery or replace it.
Corroded battery terminals or disconnected wires - Connect wires properly or change terminals.
| Starter motor is not working |
Battery is drained or worn - Replace or charge as required.
Battery wires are disconnected or incorrectly connected - Check wires and connect correctly.
Low battery output - Battery is drained, charge it.
Damaged starter motor - Starter needs to be replaced.
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