Deutz BF6M1012 Troubleshooting
| Engine Model: Deutz BF6M1012 |
| Engine Type: 4-stroke in-line 6-cylinder turbocharged liquid-cooled diesel |
| Total Displacement: 292.2 cu.in (4.79 L) |
| Rated Engine Power: 133 Hp (98 kW) at 2500 rpm |
| Fuel System Type: Mechanical direct injection |
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| Engine hard to start or doesn't start |
Clogged fuel filter - Change filter element.
Air trapped in fuel system - Bleed air.
Clogged or burnt injection nozzle - If necessary, replace with a new nozzle.
Fuel injection pump damage - Repair or replace injection pump.
Valve timing is wrong - Adjust or change timing gear.
Dirty fuel pipes - Clean or change fuel pipes.
Incorrect injection timing - Adjust as recommended.
Damaged piston rings and cylinder - Replace faulty components.
| Engine starts and immediately shuts off |
Fuel filter plugged - Filter maintenance required.
Fuel injection pump malfunction - Replace or repair injection pump.
Clogged air filter element - Replace air filter element.
Nozzle opening pressure is incorrect - Adjust as required.
| Engine shuts off suddenly during operation |
Wrong setting of fuel injection pump timing - Set up as recommended.
Dirty fuel filter - Change the filter element.
Engine has not warmed up to the recommended temperature - Warm up to required temperature.
Injection nozzles are stuck or clogged - Check injection nozzles and replace if required.
| Engine stops while idling |
Incorrectly adjusted low idle speed - Adjust as required.
The valve clearance is not adjusted - Adjustment procedure required.
Fuel injection pump is not working correctly - Replace injection pump or repair it.
Faulty fuel injection nozzles - Service or change injection nozzles.
Fuel lines or hoses clogging - Service fuel hoses and lines.
Air filter element clogged - Clean air cleaner element.
Cylinder head gasket defective - Cylinder-head gasket replacement required.
Unadjusted injection timing - Adjust as recommended.
Fuel injection pump is damaged - Replace injection pump or repair it.
One of moving engine parts has broken - Repair or replace defective parts.
Radiator fins are dirty or radiator cap is defective - Clean radiator or change cap.
Engine coolant is insufficient - Top up coolant fluid and check system for leaks.
Excessive wear of the fan belt - Belt replacement is recommended.
Insufficient engine oil - Check and refill engine oil.
Worn cylinder head gasket - Replace the gasket as required.
Wrong injection timing - Set the injection timing correctly.
Low crankcase oil level - Check and refill the oil.
Defective oil pump - Inspect and change as required.
Oil filter element clogged - Change or clean engine oil filter element.
Relief valve is defective or dirty - Replace or service relief valve.
Clearance of crankshaft bearing is excessive - Inspect and replace or repair faulty components.
Excessive oil clearance of crankpin bearing - Inspect and replace or repair faulty components.
| Diesel engine using too much oil |
Oil leakage: Damaged gaskets or seals - Replace worn parts to avoid leaks.
Improper oil viscosity - Use proper viscosity oil.
Worn or stuck piston rings - Replace piston rings.
Valve stems or guides are damaged - Valves must be replaced.
Damaged cylinder liners or pistons - Inspect liners and pistons, replace as necessary.
Engine is not warmed up to the required temperature - Warm up engine as required.
Engine oil level is insufficient - Add oil to the engine crankcase.
Fuel injection pump timing is wrong - Adjust as recommended.
Scored or worn pistons - Have pistons replaced.
Connecting rod is defective or not aligned - Need to align or replace the connecting rod.
Battery voltage is low - Recharge the battery.
Battery won’t hold charge - Service charging system or install new battery.
Battery terminals are corroded or wires are disconnected - Check wiring and clean or replace terminals.
Battery is low or faulty - Recharge or change battery.
Disconnected or incorrectly connected wires - Inspect battery wires and connect correctly.
Low battery voltage - Battery is drained, charge it.
Starter motor failing - Starter should be changed.
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