Mitsubishi S3E Troubleshooting
| Engine Model: Mitsubishi S3E |
| Engine Type: 4-cycle inline 3-cylinder naturally aspirated liquid-cooled diesel |
| Total Displacement: 119.4 cu.in (1.96 L) |
| Rated Engine Power: 37 Hp (27.6 kW) at 2400 rpm |
| Fuel System Type: Indirect fuel injection |
____________________________________________________________________________________
| Diesel engine hard to start or doesn't start |
Fuel filter plugged - Clean or change the filter.
Air trapped in fuel system - Bleed air.
Defective injection nozzle - Clean or replace injection nozzles.
Fuel injection pump malfunction - Install a new pump or rebuild.
Improper valve timing - Set the valve timing correctly.
Fuel pipes are clogged - Service fuel pipes.
Wrong injection timing - Set the injection timing correctly.
Worn piston rings and cylinder - Change faulty parts.
| Diesel starts but stalls suddenly |
Fuel filter element clogging - Change filter element.
Fuel injection pump is faulty - Repair or change injection pump.
Dirty air filter - Service air cleaner.
Nozzle opening pressure is not adjusted - Adjust as required.
| Engine stalls after running |
Fuel injection timing is wrong - Adjust as recommended.
Fuel filter plugged - Clean the filter or install new filter element.
Coolant temperature is low - Warm up engine as required.
Injection nozzles are burnt or jammed - Change or repair injection nozzles.
| Engine stalls while idling |
Incorrect low idle setting - Correct the settings.
Improper valve clearance - Adjust to proper valve clearance.
Faulty fuel injection pump - Replace injection pump or repair it.
| Diesel engine loses power |
Faulty fuel injection nozzles - Inspect nozzles and replace if necessary.
Dirt in the fuel hoses or lines - Clean fuel lines and hoses.
Dirty air cleaner - Service air cleaner.
Damaged cylinder-head gasket - Cylinder-head gasket replacement required.
Injection timing is incorrect - Check injection timing adjustment.
Fuel injection pump is damaged - Repair or replace injection pump.
One of moving engine components has failed - Replace or repair damaged components.
Radiator fins are clogged or radiator cap is faulty - Change cap or clean radiator.
Low coolant level - Add coolant fluid to cooling system and also check it for leaks.
Broken or loose fan belt - If necessary, replace the belt.
Engine oil level is low - Fill the crankcase with engine oil.
Cylinder head gasket defective - Gasket should be replaced.
Injection timing is wrong - Set the injection timing correctly.
| Insufficient oil pressure |
Low crankcase oil level - Need to add oil.
Oil pump is defective - Inspect and change as required.
Oil filter clogged - Change or clean engine oil filter element.
Stuck or defective relief valve - Change or clean relief valve.
Excessive crankshaft bearing clearance - Test and repair or replace worn parts.
Clearance of crankpin bearing is excessive - Inspect and replace or repair faulty parts.
| Engine oil consumption is too high |
External oil leaks: Worn seals or gaskets - Replace worn parts to avoid leaks.
Incorrect oil viscosity - Use correct viscosity oil.
Worn or stuck piston rings - Have piston rings replaced.
Damaged valve guides or valve stems - Replace the valves.
Damaged cylinder liners or pistons - Check pistons and liners, install new parts as required.
| Abnormal engine knocking or noise |
Engine not warmed up - Warm up engine as required.
Low engine oil level - Fill up the engine oil.
Fuel injection pump timing is wrong - Set the fuel pump timing correctly.
Pistons are worn or broken - Install new pistons.
Connecting rod misalignment or failure - Need to change or align the connecting rod.
Low battery output - Battery needs to be recharged.
Battery will not hold charge - Service charging system or change battery.
Terminals are faulty or battery cables are disconnected - Check cable connections and change or clean terminals.
Battery is discharged or defective - Change or recharge battery.
Wire harness is disconnected or incorrectly connected - Check wire harness and connect as required.
Low battery power - Recharge the battery.
Starter motor is faulty - Starter needs to be changed.
____________________________________________________________________________________
| Industrial Engines Technical Specifications |
| Car Engines Technical Specifications |
| Small Engines Technical Specifications |
| Outboard Engines Technical Specifications |
