Mitsubishi S2E2 Troubleshooting
| Engine Model: Mitsubishi S2E2 |
| Engine Type: 4-cycle 2-cylinder naturally aspirated liquid-cooled diesel |
| Total Displacement: 90.2 cu.in (1.48 L) |
| Rated Engine Power: 29.6 Hp (22.1 kW) at 2400 rpm |
| Fuel System Type: Indirect fuel injection |
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| Engine difficult to start or won't start |
Clogged fuel filter - Service the filter.
Air in fuel tank - Bleed fuel tank.
Clogged injection nozzle - Service or change injection nozzles.
Fuel injection pump malfunction - Change pump or rebuild it.
Improper valve timing - Correct or change timing gear.
Fuel pipes are clogged - Service or change fuel pipes.
Wrong injection timing - Adjust injection timing as required.
Damaged piston rings and cylinder - Change defective parts.
| Engine starts and then shuts off |
Fuel filter plugging - Clean the filter element.
Fuel injection pump malfunctioning - Change pump or rebuild it.
Air cleaner is dirty - Replace air filter element.
Incorrect nozzle opening pressure - Adjust as recommended.
| Engine shuts off while running |
Fuel injection timing is wrong - Set up as recommended.
Fuel filter element clogging - Clean the filter element.
Coolant temperature is low - Warm up engine as required.
Injection nozzles are stuck or clogged - Check injection nozzles and replace if required.
| Engine stalls while idling |
Low idle speed set incorrectly - Adjust as required.
Valve clearance is wrong - Check and adjust.
Faulty fuel injection pump - Rebuild or change fuel pump.
Defective injection nozzle - Test injection nozzles and change if necessary.
Restricted fuel lines or hoses - Fuel hoses and lines must be clean.
Dirty air cleaner - Replace air filter element.
Damaged cylinder-head gasket - Gasket should be replaced.
Injection timing is out of adjustment - Set the injection timing correctly.
Faulty fuel injection pump - Replace or repair injection pump.
One of moving engine components has failed - Repair or replace defective parts.
Clogged radiator fins or damaged radiator cap - Clean radiator or change cap.
Lack of engine coolant - Add coolant and check the components of cooling system.
Broken or loose fan belt - Replace the fan belt.
Engine oil level is low - Fill up the engine oil.
Cylinder-head gasket is broken - Replace cylinder head gasket.
Injection timing is out of adjustment - Adjust injection timing as required.
Insufficient engine oil - Add oil to the engine crankcase.
Defective oil pump - Remove and inspect oil pump.
Oil filter element clogged - Change or clean engine oil filter element.
Stuck or worn relief valve - Replace or clean relief valve.
Excessive oil clearance of crankshaft bearing - Inspect and change or repair worn components.
Excessive crankpin bearing clearance - Check and change or repair defective parts.
| Engine oil consumption is too high |
External oil leaks: Seals or gaskets are wearing excessively - Replace to repair leaks.
Incorrect oil viscosity - Fill up with the correct oil viscosity.
Worn or broken piston rings - Install new piston rings.
Valve guides or stems are damaged - Install new valves.
Pistons or cylinder liners are damaged - Check liners and pistons, change as required.
| Abnormal engine knocking or noise |
Engine is not preheated - Warm up the engine.
Not enough engine oil - Need to add engine oil.
Fuel injection pump timing is wrong - Adjust fuel injection pump as required.
Scored or worn pistons - Install new pistons.
Misaligned or defective connecting rod - Connecting rod needs to be replaced or aligned.
Low battery power - Charge the battery.
Battery drains quickly - Service or change the battery.
Bad terminals or disconnected battery cables - Check cable connections and replace or service terminals.
Battery is low or faulty - Replace or charge as required.
Wiring is incorrectly connected or disconnected - Inspect wiring and connect correctly.
Battery capacity is low - Battery needs to be recharged.
Starter motor is damaged - Repair or replace starter.
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