International D246 Troubleshooting
| Engine Model: International Harvester D246 |
| Engine Type: 4-cycle inline 4-cylinder naturally aspirated liquid-cooled diesel |
| Total Displacement: 246 cu.in (4.03 L) |
| Rated Engine Power: 74 Hp (55 kW) at 2300 rpm |
| Fuel System Type: Direct fuel injection |
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| Engine starts up hard or will not start |
Fuel filter plugged - Service or replace the filter.
Air in the fuel lines - Bleed the fuel lines.
Clogged or burnt injection nozzle - Clean or change injection nozzles.
Fuel injection pump is faulty - Rebuild or replace pump.
Valve timing is out of adjustment - Correct or replace timing gear.
Dirt in the fuel lines or hoses - Clean or replace fuel pipes.
Injection timing is incorrect - Adjust as recommended.
Worn piston rings and cylinder - Replace faulty parts.
| Engine stalls after starting |
Fuel filter plugging - Service the filter.
Fuel injection pump malfunctioning - Repair or change injection pump.
Dirty air filter - Clean or change the filter.
Nozzle opening pressure is incorrect - Adjust as recommended.
| Engine stops unexpectedly during operation |
Improper setting of fuel injection pump timing - Set the fuel pump timing correctly.
Fuel filter element clogging - Change filter element.
Coolant temperature is low - Engine is not warmed up to the required temperature.
Injection nozzles sticking or clogged - Change or repair injection nozzles.
Incorrectly adjusted low idle speed - Normalize low idle speed.
Valve clearance is out of adjustment - Need to adjust valve clearance.
Fuel injection pump is damaged - Repair or replace injection pump.
Damaged or dirty injection nozzles - Service or change injection nozzles.
Fuel lines or hoses are dirty - Clean fuel lines and hoses.
Air filter element clogged - Install new air filter element.
Cylinder head gasket is blown - Install a new gasket.
Injection timing is wrong - Adjust injection timing as required.
Faulty fuel injection pump - Rebuild or replace pump.
One of moving engine components is worn - Repair or replace defective components.
Radiator fins are dirty or radiator cap is defective - Clean radiator or change cap.
Insufficient coolant fluid - The cooling system needs to be refilled and checked for faults.
Loose or damaged fan belt - The fan belt needs to be replaced.
Engine oil insufficient - Fill up the oil to required level.
Cylinder head gasket is blown - Cylinder-head gasket replacement required.
Incorrect injection timing - Set the injection timing correctly.
Not enough oil in the engine - Add oil as required.
Worn oil pump - Replace as required.
Oil filter is clogged - Replace or clean engine oil filter element.
Relief valve is seized or worn - Relief valve need to be replaced or cleaned.
Excessive crankshaft bearing clearance - Test and replace or repair worn components.
Crankpin bearing clearance is excessive - Check and change or repair defective parts.
Oil leakage: Damaged gaskets or seals - Change worn parts according to specifications.
Oil viscosity is wrong - Fill up with the correct oil viscosity.
Worn or stuck piston rings - Have piston rings replaced.
Valve stems or guides are damaged - Replace defective valves.
Pistons or cylinder liners are scuffed - Inspect pistons and liners, change as required.
Engine is cold - Warm up the engine.
Insufficient engine oil - Fill up the oil to required level.
Improper setting of fuel injection pump timing - Adjust the pump as required.
Scored or worn pistons - Pistons replacement required.
Connecting rod is defective or not aligned - Align or change connecting rod.
Low battery capacity - Battery is drained, charge it.
Battery discharges quickly - Service or replace the battery.
Disconnected wires or corroded battery terminals - Connect cables correctly or replace terminals.
Battery is discharged or worn - Change or recharge battery.
Battery wiring is disconnected or improperly connected - Inspect wiring and connect as required.
Low battery voltage - Battery is drained, recharge it.
Starter motor failing - Replace or repair starter.
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