International D236 Troubleshooting
| Engine Model: International Harvester D236 |
| Engine Type: 4-cycle inline 6-cylinder naturally aspirated liquid-cooled diesel |
| Total Displacement: 236 cu.in (3.9 L) |
| Rated Engine Power: 52-61 Hp (38-45 kW) at 1800 rpm |
| Fuel System Type: Indirect fuel injection |
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| Diesel hard to start or doesn't start |
Fuel filter element is clogged - Replace filter element.
Air in the fuel lines - Bleed the fuel lines.
Clogged injection nozzle - Check injection nozzles and replace if required.
Fuel injection pump malfunctioning - Repair or install new pump.
Valve timing is incorrect - Adjust or change timing gear.
Fuel pipes are clogged - Clean or change fuel pipes.
Injection timing is improper - Set the injection timing correctly.
Damaged piston rings and cylinder - Change defective components.
| Engine starts but immediately stalls |
Fuel filter plugging - Change the filter element.
Fuel injection pump is broken - Rebuild or change fuel pump.
Plugged air filter - Air filter maintenance required.
Unadjusted nozzle opening pressure - Set it correctly.
| Engine stalls during operation |
Improper fuel injection timing - Set it up as required.
Clogged fuel filter - Clean or change the filter.
Engine not warmed up - Normalize the temperature by warming up the engine.
Injection nozzles are jammed or clogged - Clean or change injection nozzles.
| Engine stops while idling |
Too low idle RPM - Adjust low idle speed.
Valve clearance is wrong - Correct valve clearance.
Faulty fuel injection pump - Rebuild or replace pump.
| Engine power is insufficient |
Fuel injection nozzles are dirty or defective - Test injection nozzles and change if necessary.
Fuel hoses or lines clogging - Clean fuel lines and hoses.
Dirty air filter element - Service air cleaner.
Leaking cylinder head gasket - Replace cylinder head gasket.
Unadjusted injection timing - Check injection timing adjustment.
Fuel injection pump is damaged - Rebuild or install a new injection pump.
Any of moving engine parts is worn - Change or repair damaged parts.
Dirty radiator core or faulty radiator cap - Install new cap or clean radiator.
Lack of engine coolant - Top up coolant fluid and check system for leaks.
Damaged or worn fan belt - If necessary, replace the belt.
Lack of engine oil - Need to add engine oil.
Cylinder head gasket is damaged - Replace cylinder head gasket.
Injection timing is out of adjustment - Adjust as recommended.
Not enough oil in the engine - Checking oil level and add if necessary.
Oil pump malfunction - Repair or change.
Oil filter clogged - Change or clean engine oil filter element.
Stuck or defective relief valve - Change or service relief valve.
Excessive oil clearance of crankshaft bearing - Test and replace or repair worn components.
Excessive crankpin bearing clearance - Test and repair or replace worn parts.
| Engine oil consumption is too high |
Oil leaking: Worn seals or gaskets - To repair leaks, replace worn parts.
Improper oil viscosity - Use correct viscosity oil.
Piston rings are defective or worn - Change the piston rings as required.
Valve stems or guides are damaged - Need to replace the valves.
Scuffed pistons or cylinder liners - Inspect pistons and liners, change as required.
Engine is not fully warmed up - Warm up the engine.
Insufficient engine oil - Fill the crankcase with engine oil.
Fuel injection pump timing is not adjusted - Set up as recommended.
Broken or worn pistons - Have pistons replaced.
Connecting rod is defective or not aligned - Need to align or replace the connecting rod.
Low battery capacity - Battery is drained, charge it.
Battery does not hold charge - Battery needs service or replacement.
Wires are disconnected or battery terminals are corroded - Check wire connections and change or service terminals.
Battery is low or faulty - Replace or charge as required.
Wiring harness is disconnected or improperly connected - Check wiring harness and connect as required.
Low battery voltage - Recharge the battery.
Starter motor is damaged - Starter should be changed.
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