Deutz BF6L914C Troubleshooting
| Engine Model: Deutz BF6L914C |
| Engine Type: 4-stroke in-line 6-cylinder turbocharged air-cooled diesel |
| Total Displacement: 395 cu.in (6.5 L) |
| Rated Engine Power: 189 Hp (141 kW) at 2500 rpm |
| Fuel System Type: Direct injection |
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| Engine difficult to start or will not start |
Fuel filter plugged - Change filter element.
Air in the fuel pipes - Bleed the fuel pipes.
Clogged or defective injection nozzles - If necessary, replace with a new nozzle.
Fuel injection pump malfunctioning - Replace or repair injection pump.
Unadjusted valve timing - Set the valve timing correctly.
Plugged fuel pipes - Clean or change fuel pipes.
Wrong injection timing - Adjust injection timing as required.
Excessive wear of piston rings and cylinder - Replace faulty parts.
| Diesel starts and suddenly stops |
Fuel filter plugged - Clean the filter or install new filter element.
Fuel injection pump malfunction - Repair or change injection pump.
Plugged air cleaner - Service or replace the air filter.
Improper nozzle opening pressure - Set it correctly.
| Engine shuts off while running |
Improper fuel injection timing - Set it up as required.
Fuel filter element is clogged - Clean or change the filter.
Engine is not warmed up to the required temperature - Engine is not warmed up to the required temperature.
Stuck or clogged injection nozzle - Repair or replace injection nozzles.
| Engine stalls when idling |
Incorrect low idle setting - Adjust as required.
The valve clearance is not adjusted - Adjust valve clearance.
Fuel injection pump failure - Install a new fuel pump or repair.
Dirty cooling fins - Service and clean.
Defective injection nozzle - Check and replace nozzles if required.
Fuel lines or hoses are clogged - Fuel hoses and lines must be clean.
Dirty air filter - Replace air filter element.
Cylinder-head gasket is broken - Gasket should be replaced.
Injection timing is improper - Set up as recommended.
Fuel injection pump is faulty - Rebuild or replace pump.
Any of moving engine parts is worn - Replace or repair damaged components.
Cooling fins are dirty - Clean the fins.
Fan belt is loose or defective - Fan belt must be replaced.
Engine oil level low - Checking oil level and add if necessary.
Leaking cylinder head gasket - Replace the gasket as required.
Incorrect injection timing - Use correct injection timing adjustment.
| Oil pressure is insufficient |
Not enough oil in the engine - Add oil as required.
Worn oil pump - Install a new pump.
Clogged oil filter element - Change or clean engine oil filter element.
Relief valve is defective or dirty - Change or service relief valve.
Excessive oil clearance of crankshaft bearing - Test and replace or repair worn components.
Excessive crankpin bearing clearance - Inspect and change or repair worn components.
| Excessive oil consumption |
External oil leaks: Gaskets or seals may be damaged - Worn parts need to be replaced.
Oil viscosity is incorrect - Use proper viscosity oil.
Seized or wear piston rings - Replace piston rings.
Damaged valve stems or valve guides - Replace defective valves.
Cylinder liners or pistons are scored - Inspect pistons and liners, fit new components as necessary.
Engine is not preheated - Warm up the engine.
Insufficient engine oil - Need to add engine oil.
Fuel injection pump timing is wrong - Adjust the pump as required.
Worn or broken pistons - Pistons replacement required.
Misaligned or faulty connecting rod - Replace or align connecting rod.
Low battery capacity - Battery is drained, charge it.
Battery runs out quickly - Service battery or change it.
Disconnected battery cables or bad terminals - Check cables and clean or change terminals.
| Starter motor is not working |
Battery is drained or worn - Replace or charge as required.
Battery cables are disconnected or incorrectly connected - Check cables and connect as needed.
Battery power is low - Battery is drained, charge it.
Starter motor failing - Starter needs to be changed.
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