Mitsubishi S6E2 Troubleshooting
| Engine Model: Mitsubishi S6E2 |
| Engine Type: 4-cycle inline 6-cylinder naturally aspirated liquid-cooled diesel |
| Total Displacement: 270.6 cu.in (4.43 L) |
| Rated Engine Power: 121 Hp (90 kW) at 2500 rpm |
| Fuel System Type: Direct fuel injection |
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| Engine hard to start or won't start |
Clogged fuel filter - Replace the filter element.
There is air in the fuel system - Bleed the system.
Damaged or dirty injection nozzles - Check and replace nozzles if required.
Fuel injection pump is faulty - Replacement or repair required.
Valve timing is wrong - Correct or change timing gear.
Dirt in the fuel lines or hoses - Service or change fuel pipes.
Wrong injection timing - Set up as recommended.
Excessive wear of piston rings and cylinder - Replace faulty components.
| Engine starts and then shuts off |
Clogged fuel filter - Clean or replace the filter.
Defective fuel injection pump - Change pump or rebuild it.
Dirty air filter element - Replace air filter element.
Nozzle opening pressure is improper - Set up as recommended.
| Engine stops unexpectedly during operation |
Incorrect adjustment of fuel injection pump timing - Set it up as required.
Clogged fuel filter - Replace the filter element.
Coolant temperature is low - Engine is not warmed up to the required temperature.
Defective or stuck injection nozzles - Check injection nozzles and replace if required.
Low idle speed adjustment is incorrect - Test and adjust.
Valve clearance is not correct - Need to adjust valve clearance.
Fuel injection pump malfunctioning - Repair or install new pump.
Faulty fuel injection nozzles - Clean or replace injection nozzles.
Fuel lines or hoses clogging - Clean fuel system lines and hoses.
Clogged air filter - Clean or change.
Defective cylinder head gasket - Change cylinder head gasket.
Wrong injection timing - Set up as recommended.
Faulty fuel injection pump - Change or repair the pump.
One of moving engine parts is faulty - Change or repair damaged parts.
Clogged radiator core or damaged radiator cap - Clean radiator or replace cap.
Not enough coolant - Add coolant and check the components of cooling system.
Damaged or worn fan belt - Replace the fan belt.
Lack of engine oil - Add oil to the engine crankcase.
Cylinder head gasket defective - Replace cylinder head gasket.
Injection timing is out of adjustment - Set up as recommended.
Engine oil level low - Add oil as required.
Oil pump is damaged - Inspect and change as required.
Oil filter is dirty - Change or clean engine oil filter element.
Worn or dirty relief valve - Replace or clean relief valve.
Clearance of crankshaft bearing is excessive - Test and replace or repair worn components.
Clearance of crankpin bearing is excessive - Check and replace or repair defective parts.
| Excessive engine oil consumption |
Oil leakage: Defective seals or gaskets - Replace to repair leaks.
Wrong oil viscosity - Fill up with the correct oil viscosity.
Piston rings are stuck or worn - Change the piston rings as required.
Valve guides or stems are damaged - Install new valves.
Damaged cylinder liners or pistons - Inspect liners and pistons, fit new parts as necessary.
Engine is cold - Warm up to required temperature.
Engine oil level is insufficient - Add oil to the engine crankcase.
Fuel injection pump timing is wrong - Set it up as required.
Worn or scored pistons - Have pistons replaced.
Connecting rod is misaligned or worn - Need to align or replace the connecting rod.
Low battery power - Battery is drained, recharge it.
Battery runs out quickly - Service charging system or install new battery.
Corroded battery terminals or disconnected wires - Check wire connections and change or service terminals.
Battery is low or faulty - Charge or change the battery.
Wiring is improperly connected or disconnected - Check wiring and connect properly.
Battery power is low - Battery is drained, recharge it.
Starter motor failing - Change or repair starter.
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