International DT466 Troubleshooting
| Engine Model: Navistar International DT466 |
| Engine Type: 4-cycle inline 6-cylinder direct injection liquid-cooled diesel |
| Total Displacement: 466 cu.in (7.6 L) |
| Rated Engine Power: 160-300 Hp (119-224 kW) at 2700 rpm |
| Aspiration Type: Turbocharged |
____________________________________________________________________________________
| Engine hard to start or will not start |
Dirty fuel filter - Install new filter element.
There is air in the fuel system - Bleed the system.
Defective or clogged injection nozzle - If necessary, replace with a new nozzle.
Fuel injection pump failure - Install a new pump or rebuild.
Valve timing is improper - Correct or change timing gear.
Fuel pipes are clogged - Clean or replace fuel pipes.
Injection timing is improper - Set the injection timing correctly.
Worn piston rings and cylinder - Change defective components.
| Diesel starts but stalls suddenly |
Fuel filter element clogging - Clean or replace the filter.
Fuel injection pump is defective - Change or repair the pump.
Air cleaner is dirty - Clean or change the filter.
Nozzle opening pressure is not adjusted - Set it correctly.
| Engine stalls during operation |
Fuel injection timing is wrong - Set up as recommended.
Fuel filter plugging - Install new filter element.
Coolant temperature is low - Warm up to required temperature.
Injection nozzles are jammed or clogged - Check injection nozzles and replace if required.
Incorrect low idle speed adjustment - Adjust the low idle speed.
Valve clearance is not correct - Adjust to proper valve clearance.
Fuel injection pump failure - Rebuild or replace pump.
| Diesel engine loses power |
Fuel injection nozzles are faulty or clogged - Check injection nozzles and replace if required.
Fuel lines or hoses are clogged - Clean fuel system lines and hoses.
Intake air restriction - Clean or change the filter.
Cylinder head gasket is blown - Change cylinder head gasket.
Incorrect injection timing - Adjust according to specifications.
Fuel injection pump is faulty - Replacement or repair required.
One of moving engine components is worn - Repair or replace defective parts.
Damaged radiator cap or dirty radiator core - Clean radiator or replace cap.
Not enough coolant - Add coolant fluid to cooling system and also check it for leaks.
Fan belt is loose or defective - Change the fan belt.
Insufficient engine oil - Fill the crankcase with engine oil.
Defective cylinder head gasket - Replace cylinder head gasket.
Injection timing is improper - Set up as recommended.
Not enough oil in the engine - Check and refill the oil.
Defective oil pump - Inspect and change as required.
Dirty oil filter element - Change or service engine oil filter.
Worn or dirty relief valve - Change or service relief valve.
Clearance of crankshaft bearing is excessive - Inspect and replace or repair faulty parts.
Clearance of crankpin bearing is excessive - Check and replace or repair defective parts.
| High engine oil consumption |
Oil leakage: Seals or gaskets are wearing excessively - Defective components must be replaced.
Oil viscosity is incorrect - Use oil of correct viscosity.
Piston rings are stuck or worn - Change the piston rings as required.
Valve stems or guides are damaged - Valves must be replaced.
Scuffed pistons or cylinder liners - Check liners and pistons, replace as required.
Engine not warmed up - Warm up engine as required.
Engine oil level is insufficient - Fill the crankcase with engine oil.
Improper fuel injection timing - Adjust fuel injection pump as required.
Scored or worn pistons - Pistons replacement required.
Connecting rod is worn or not aligned - Connecting rod must be aligned or replaced.
Battery voltage is low - Recharge the battery.
Battery drains quickly - Service or change the battery.
Disconnected wiring or bad battery terminals - Connect wires correctly or change terminals.
Battery is drained or worn - Charge or change the battery.
Wiring harness is disconnected or improperly connected - Check wiring harness and connect as required.
Low battery power - Low battery charging, charge as required.
Starter motor is damaged - Repair or replace starter.
____________________________________________________________________________________
| Industrial Engines Technical Specifications |
| Car Engines Technical Specifications |
| Small Engines Technical Specifications |
| Outboard Engines Technical Specifications |
