Deutz BF4M2012C Troubleshooting
| Engine Model: Deutz BF4M2012C |
| Engine Type: 4-cycle inline 4-cylinder direct injection liquid-cooled diesel |
| Total Displacement: 251 cu.in (4.04 L) |
| Rated Engine Power: 80-148 Hp (60-110 kW) at 2500 rpm |
| Aspiration Type: Turbocharged |
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| Engine starts up hard or won't start |
Fuel filter element is clogged - Clean or replace the filter.
Air in the fuel system - Air bleeding.
Fuel injection nozzles are damaged - Check injection nozzles and replace if required.
Fuel injection pump failure - Install a new fuel pump or repair.
Valve timing is wrong - Use correct valve timing adjustment.
Fuel pipes are plugged - Clean fuel pipes.
Injection timing is wrong - Set the injection timing correctly.
Piston rings and cylinder are worn - Change defective components.
| Engine starts but then stops |
Fuel filter element is clogged - Change the filter element.
Defective fuel injection pump - Repair or change injection pump.
Air filter clogged - Clean or change the filter.
Incorrect nozzle opening pressure - Set up as recommended.
| Engine stops suddenly during operation |
Improper fuel injection timing - Adjust according to specifications.
Dirty fuel filter - Clean or replace the filter.
Engine has not warmed up to the recommended temperature - Warm up to required temperature.
Injection nozzles sticking or clogged - Service or change injection nozzles.
| Engine stops while idling |
Incorrect low idle setting - Adjust low idle speed.
Valve out of adjustment - Need to adjust valve clearance.
Defective fuel injection pump - Repair or install new pump.
| Engine power is insufficient |
Defective injection nozzle - Service or change injection nozzles.
Dirt in the fuel hoses or lines - Clean fuel system lines and hoses.
Clogged air filter - Clean or replace the element.
Defective cylinder head gasket - Gasket should be replaced.
Incorrect injection timing - Set the injection timing correctly.
Fuel injection pump malfunctioning - Replace injection pump or repair it.
Any of moving engine components is faulty - Change or repair damaged parts.
Dirty radiator fins or faulty radiator cap - Clean radiator or change cap.
Coolant level is low - Add coolant and check the components of cooling system.
Fan belt is worn or faulty - Change the fan belt.
Low engine oil level - Checking oil level and add if necessary.
Defective cylinder head gasket - Install a new gasket.
Wrong injection timing - Adjust injection timing as required.
Engine oil level low - Add oil to the engine crankcase.
Oil pump failure - Repair or replace.
Dirty oil filter element - Service or replace engine oil filter.
Worn or dirty relief valve - Change or service relief valve.
Excessive crankshaft bearing clearance - Check and replace or repair defective parts.
Excessive oil clearance of crankpin bearing - Inspect and change or repair worn components.
| Excessive engine oil consumption |
Oil leakage: Defective seals or gaskets - Change to repair leaks.
Crankcase oil too light - Use proper viscosity oil.
Damaged or seized piston rings - Piston rings replacement required.
Valve stems or guides are damaged - Valves must be replaced.
Scored cylinder liners or pistons - Check pistons and liners, install new parts as required.
| Abnormal engine noise or knocking |
Coolant temperature is low - Warm up to required temperature.
Engine oil level is insufficient - Fill up the engine oil.
Wrong setting of fuel injection pump timing - Adjust according to specifications.
Worn or broken pistons - Install new pistons.
Connecting rod is defective or misaligned - Connecting rod needs to be replaced or aligned.
Low battery voltage - Battery needs to be recharged.
Battery is not holding charge - Service or change the battery.
Wires are disconnected or battery terminals are corroded - Check cables and clean or change terminals.
| Starter motor is not working |
Battery is low or faulty - Charge or replace the battery.
Wiring is incorrectly connected or disconnected - Inspect wiring and connect correctly.
Low battery voltage - Low battery charging, charge as required.
Defective starter motor - Starter should be replaced.
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