International D436 Troubleshooting
| Engine Model: International Harvester D436 |
| Engine Type: 4-cycle inline 6-cylinder naturally aspirated liquid-cooled diesel |
| Total Displacement: 436 cu.in (7.1 L) |
| Rated Engine Power: 145-170 Hp (108-127 kW) at 2300 rpm |
| Fuel System Type: Direct fuel injection |
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| Engine starts up hard or doesn't start |
Fuel filter plugged - Replace the filter element.
There is air in the fuel system - Bleed the system.
Dirty or damaged injection nozzles - If necessary, replace with a new nozzle.
Fuel injection pump is broken - Rebuild or change fuel pump.
Valve timing is improper - Correct or change timing gear.
Fuel pipes clogging - Service or replace fuel pipes.
Incorrect injection timing - Use correct injection timing adjustment.
Cylinder or piston rings are worn - Change defective components.
| Engine starts but then stops |
Fuel filter element clogging - Replace the filter element.
Fuel injection pump is not operating properly - Change pump or rebuild it.
Dirty air filter - Air filter maintenance required.
Improper nozzle opening pressure - Set it correctly.
| Engine shuts off suddenly during operation |
Incorrect adjustment of fuel injection pump timing - Set it up as required.
Fuel filter element is clogged - Change the filter element.
Engine is not preheated - Normalize the temperature by warming up the engine.
Injection nozzles sticking or clogged - Repair or replace injection nozzles.
Improperly adjusted low idle speed - Correct the settings.
The valve clearance is incorrect - Need to adjust valve clearance.
Defective fuel injection pump - Replacement or repair required.
Defective injection nozzle - Change fuel injection nozzles.
Fuel hoses or lines are dirty - Clean fuel system lines and hoses.
Air filter clogged - Change air filter element.
Damaged cylinder-head gasket - Replace the gasket as required.
Improper injection timing - Adjust injection timing as required.
Fuel injection pump is faulty - Rebuild or change fuel pump.
Any of moving engine components is faulty - Repair or replace defective parts.
Defective radiator cap or clogged radiator fins - Clean radiator or install new cap.
Low engine coolant - Add coolant and check the components of cooling system.
Loose or damaged fan belt - If necessary, replace the belt.
Engine oil insufficient - Add oil to the engine crankcase.
Cylinder head gasket is worn - Gasket should be replaced.
Improper injection timing - Adjust according to specifications.
Oil level is low - Need to add oil.
Oil pump is worn or damaged - Repair or replace.
Clogged oil filter element - Clean or replace engine oil filter element.
Stuck or defective relief valve - Replace or service relief valve.
Clearance of crankshaft bearing is excessive - Check and replace or repair defective parts.
Crankpin bearing clearance is excessive - Check and replace or repair defective parts.
| Excessive oil consumption |
Oil leakage: Damaged seals or gaskets - Install new components.
Incorrect oil viscosity - Use proper viscosity oil.
Piston rings are seized or worn - Change the piston rings as required.
Damaged valve guides or valve stems - Valves need to be changed.
Cylinder liners or pistons are scuffed - Inspect pistons and liners, replace as required.
Low coolant temperature - Engine is not warmed up to the required temperature.
Lack of engine oil - Need to add engine oil.
Wrong setting of fuel injection pump timing - Use the correct fuel injection pump timing adjustment.
Pistons are scored or worn - Have pistons replaced.
Connecting rod is worn or misaligned - Need to change or align the connecting rod.
Low battery voltage - Battery needs to be recharged.
Battery does not hold charge - Service charging system or replace battery.
Disconnected battery cables or bad terminals - Check cables and clean or change terminals.
Battery is discharged or worn - Change or recharge battery.
Battery cables are disconnected or incorrectly connected - Check cables and connect as needed.
Low battery output - Recharge the battery.
Starter motor is faulty - Starter needs to be replaced.
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