Mitsubishi KE75 Troubleshooting
| Engine Model: Mitsubishi KE75 |
| Engine Type: 4-cycle 2-cylinder naturally aspirated liquid-cooled diesel |
| Total Displacement: 46.6 cu.in (0.76 L) |
| Rated Engine Power: 17 Hp (12.7 kW) at 2800 rpm |
| Fuel System Type: Indirect injection |
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| Engine difficult to start or won't start |
Fuel filter element is clogged - Change filter element.
Air trapped in fuel system - Bleed air.
Fuel injection nozzles fault - Service or change injection nozzles.
Fuel injection pump is not working correctly - Install a new pump or rebuild.
Valve timing is improper - Correct or change timing gear.
Clogged fuel pipes - Service fuel pipes.
Injection timing is incorrect - Check injection timing adjustment.
Cylinder or piston rings are worn - Change faulty parts.
| Diesel starts but then stops |
Fuel filter element is dirty - Install new filter element.
Fuel injection pump damage - Repair or install new pump.
Dirty air filter element - Clean or change.
Nozzle opening pressure is not adjusted - Adjust as recommended.
| Diesel shuts off while driving |
Fuel injection timing is not adjusted - Set the fuel pump timing correctly.
Fuel filter element is clogged - Change filter element.
Low coolant temperature - Warm up engine as required.
Defective or stuck injection nozzles - Clean or replace injection nozzles.
Low idle speed adjustment is incorrect - Adjustment required.
Valve out of adjustment - Have it adjusted.
Fuel injection pump malfunction - Install a new pump or rebuild.
Clogged injection nozzle - Install a new kit of correctly balanced nozzles.
Dirty fuel lines or hoses - Service fuel lines and hoses.
Air filter plugged - Install new air filter element.
Blown cylinder head gasket - Replace cylinder head gasket.
Wrong injection timing - Adjust as recommended.
Faulty fuel injection pump - Install a new pump or rebuild.
One of moving engine parts is faulty - Repair or replace defective components.
Clogged radiator core or leaking radiator cap - Clean radiator or change cap.
Coolant level is low - Refill to the correct level and inspect system for leaks.
Excessive wear of the fan belt - Replace as required.
Engine oil insufficient - Checking oil level and add if necessary.
Cylinder-head gasket is broken - Replace the gasket as required.
Wrong injection timing - Use correct injection timing adjustment.
Oil level is low - Fill crankcase to proper oil level.
Defective oil pump - Repair or change.
Oil filter clogging - Service or change engine oil filter element.
Relief valve is stuck or broken - Replace or clean relief valve.
Clearance of crankshaft bearing is excessive - Check and replace or repair defective parts.
Crankpin bearing clearance is excessive - Test and repair or replace worn parts.
External oil leaks: Worn gaskets or seals - Defective components must be replaced.
Crankcase oil too light - Use proper viscosity oil.
Piston rings are seized or worn - Install new piston rings.
Valve stems or guides are damaged - Replace the valves.
Damaged cylinder liners or pistons - Check liners and pistons, change as required.
Engine is not warmed up to the required temperature - Normalize the temperature by warming up the engine.
Engine oil level low - Check oil level and add oil as required.
Wrong setting of fuel injection pump timing - Adjust fuel injection pump as required.
Piston wear or scoring - Have pistons replaced.
Connecting rod misalignment or failure - Connecting rod needs to be replaced or aligned.
| Starter motor cranks slow |
Low battery output - Battery needs to be recharged.
Battery runs out quickly - Service battery or change it.
Disconnected wiring or bad battery terminals - Check cables and service or change terminals.
Battery is discharged or defective - Battery needs to be recharged or replaced.
Wire harness is disconnected or incorrectly connected - Check wire harness and connect as required.
Low battery output - Low battery charging, charge as required.
Starter motor failing - Repair or change starter.
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