John Deere 4045TFM85 Troubleshooting
| Engine Model: John Deere PowerTech 4045TFM85 |
| Engine Type: 4-stroke in-line 4-cylinder turbocharged liquid-cooled diesel |
| Total Displacement: 275 cu.in (4.5 L) |
| Rated Engine Power: 100-225 Hp (75-168 kW) at 2400-2800 rpm |
| Fuel System Type: Common Rail Direct Injection |
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| Engine starts hard or won't start |
Fuel filter plugging - Service the filter.
Air in the fuel system - Air bleeding.
Fuel injection nozzles are clogged or faulty - Inspect nozzles and replace if necessary.
Fuel injection pump malfunction - Repair or replace injection pump.
Improper valve timing - Correct or change timing gear.
Restricted fuel pipes - Service or replace fuel pipes.
Injection timing is out of adjustment - Set the injection timing correctly.
Worn cylinder or piston rings - Change faulty parts.
| Diesel starts but then stops |
Clogged fuel filter - Change the filter element.
Damaged fuel injection pump - Install a new fuel pump or repair.
Intake air restriction - Carry out maintenance on air filter.
Nozzle opening pressure is incorrect - Set up as recommended.
| Engine shuts off while running |
Improper setting of fuel injection pump timing - Use the correct fuel injection pump timing adjustment.
Fuel filter plugged - Replace the filter element.
Engine is cold - Warm up the engine.
Injection nozzles are jammed or clogged - Service or change injection nozzles.
| Engine stalls while idling |
Incorrect low idle setting - Correct low idle adjustment.
The valve clearance is incorrect - Have it adjusted.
Fuel injection pump is broken - Repair or change injection pump.
Fuel injection nozzles are damaged or dirty - Clean or change injection nozzles.
Fuel hoses or lines clogging - Clean fuel system hoses and lines.
Air filter is dirty - Install new air filter element.
Worn cylinder head gasket - Cylinder-head gasket replacement required.
Injection timing is out of adjustment - Set the injection timing correctly.
Fuel injection pump malfunctioning - Replace injection pump or repair it.
One of moving engine parts has broken - Repair or replace defective components.
Radiator fins are dirty or radiator cap is defective - Change cap or clean radiator.
Coolant level is low - Add coolant and check the components of cooling system.
Fan belt is worn or faulty - The fan belt needs to be replaced.
Engine oil level is insufficient - Fill the crankcase with engine oil.
Cylinder head gasket is worn - Cylinder-head gasket replacement required.
Injection timing is wrong - Check injection timing adjustment.
Not enough oil in the engine - Check and refill the oil.
Defective oil pump - Check and replace if necessary.
Oil filter is dirty - Service or change engine oil filter element.
Relief valve is seized or worn - Change or clean relief valve.
Excessive crankshaft bearing clearance - Inspect and replace or repair faulty parts.
Excessive crankpin bearing clearance - Check and replace or repair defective parts.
| Diesel engine using too much oil |
Oil leaks: Worn gaskets or seals - New components need to be installed.
Incorrect oil viscosity - Use proper viscosity oil.
Piston rings are stuck or broken - Piston rings need to be replaced.
Valve stems and guides are worn - Valves need to be changed.
Worn cylinder liners or pistons - Check pistons and liners, replace as required.
Coolant temperature is low - Warm up engine as required.
Low engine oil level - Check and refill engine oil.
Incorrect adjustment of fuel injection pump timing - Use the correct fuel injection pump timing adjustment.
Broken or worn pistons - Replace the pistons as required.
Misaligned or defective connecting rod - Need to replace or align the connecting rod.
Low battery capacity - Battery is drained, charge it.
Battery drains quickly - Battery needs to be serviced or replaced.
Battery cables are disconnected or terminals are faulty - Check cable connections and change or clean terminals.
Battery is drained or worn - Charge or change the battery.
Wiring is improperly connected or disconnected - Check wiring and connect properly.
Low battery power - Battery is drained, recharge it.
Defective starter motor - Starter needs to be replaced.
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