Yanmar 3TN82E Troubleshooting
| Engine Model: Yanmar 3TN82E |
| Engine Type: 4-cycle 3-cylinder direct injection liquid-cooled diesel |
| Total Displacement: 83.1 cu.in (1.36 L) |
| Rated Engine Power: 33 Hp (24.6 kW) at 2800 rpm |
| Aspiration Type: Naturally aspirated |
____________________________________________________________________________________
| Engine starts hard or doesn't start |
Clogged fuel filter - Change filter element.
Air trapped in fuel system - Bleed air.
Damaged or dirty injection nozzles - Replace injection nozzles.
Fuel injection pump is broken - Rebuild or install a new injection pump.
Unadjusted valve timing - Correct or change timing gear.
Restricted fuel pipes - Service or change fuel pipes.
Improper injection timing - Check injection timing adjustment.
Piston rings and cylinder are worn - Change faulty components.
| Engine starts but then stalls |
Fuel filter plugged - Change filter element.
Fuel injection pump is broken - Change or repair the pump.
Clogged air filter element - Replace air filter element.
Nozzle opening pressure is incorrect - Adjust as required.
| Engine stalls while running |
Fuel injection timing is not adjusted - Adjust as recommended.
Dirty fuel filter - Filter maintenance required.
Coolant temperature is low - Engine is not warmed up to the required temperature.
Injection nozzles sticking or clogged - Check injection nozzles and replace if required.
Wrong adjustment of low idle speed - Correct low idle settings.
Valve clearance is out of adjustment - Check and adjust.
Fuel injection pump is defective - Repair or install new pump.
Dirty or faulty injection nozzles - Change fuel injection nozzles.
Dirty fuel hoses or lines - Fuel hoses and lines must be clean.
Air filter is dirty - Clean air cleaner element.
Cylinder-head gasket is broken - Replace the gasket as required.
Unadjusted injection timing - Use correct injection timing adjustment.
Faulty fuel injection pump - Repair or install a new fuel pump.
One of moving engine components has failed - Change or repair damaged parts.
Radiator core is dirty or radiator cap is damaged - Replace cap or clean radiator.
Coolant level is low - Fill the cooling system and check components for leaks or other faults.
Fan belt slipping or worn - Install new fan belt.
Insufficient engine oil - Check and refill engine oil.
Cylinder head gasket is blown - Install new cylinder head gasket.
Injection timing is improper - Adjust according to specifications.
| Insufficient oil pressure |
Engine oil insufficient - Add oil to the engine crankcase.
Defective oil pump - Replace as required.
Oil filter is clogged - Service or replace engine oil filter.
Worn or dirty relief valve - Relief valve need to be replaced or cleaned.
Clearance of crankshaft bearing is excessive - Inspect and replace or repair faulty parts.
Crankpin bearing clearance is excessive - Inspect and change or repair worn components.
| Diesel engine consuming too much oil |
External oil leaks: Gaskets or seals can be faulty - Replace to repair leaks.
Oil viscosity is incorrect - Use proper viscosity oil.
Damaged or seized piston rings - Change piston rings.
Valve stems and guides are worn - Install new valves.
Scuffed pistons or cylinder liners - Check liners and pistons, install new components as required.
Engine is not fully warmed up - Warm up to required temperature.
Engine oil level is insufficient - Check oil level and add oil as required.
Timing of fuel injection pump is incorrect - Adjust as recommended.
Worn or broken pistons - Pistons replacement required.
Connecting rod is not aligned or worn - Replace or align connecting rod.
Low battery output voltage - Charge the battery.
Battery drains quickly - Service charging system or change battery.
Terminals are faulty or battery cables are disconnected - Check wire connections and change or service terminals.
Battery is drained or defective - Recharge or change battery.
Battery wires are disconnected or incorrectly connected - Check wires and connect correctly.
Battery power is low - Recharge the battery.
Starter motor is damaged - Repair or install a new starter.
____________________________________________________________________________________
| Industrial Engines Technical Specifications |
| Small Engines Technical Specifications |
| Car Engines Technical Specifications |
| Outboard Engines Technical Specifications |
