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| Home / Car Engines / Toyota Engines / Toyota 2L |
Toyota 2L Troubleshooting
| Engine starts hard or will not start |
Fuel filter plugging - Clean or change the filter.
Air in fuel system - Bleed fuel system.
Fuel injection nozzles are damaged - Replace injection nozzles.
Defective fuel injection pump - Replace or repair injection pump.
Unadjusted valve timing - Adjust or change timing gear.
Restricted fuel pipes - Clean fuel pipes.
Injection timing is improper - Set up as recommended.
Excessive wear of piston rings and cylinder - Replace defective components.
| Engine starts and stops suddenly |
Fuel filter element is clogged - Filter maintenance required.
Fuel injection pump is not operating properly - Repair or install new pump.
Air filter plugged - Replace air filter element.
Unadjusted nozzle opening pressure - Set up as recommended.
| Engine stops unexpectedly during operation |
Fuel injection timing is wrong - Use the correct fuel injection pump timing adjustment.
Fuel filter element clogging - Service the filter.
Engine not warmed up - Warm up engine as required.
Injection nozzles are burnt or jammed - Repair or change injection nozzles.
| Engine stalls when idle |
Wrong adjustment of low idle speed - Correct low idle settings.
Incorrect valve clearance - Adjust valve clearance according to specifications.
Fuel injection pump is not working correctly - Repair or install new pump.
| Diesel engine loses power |
Fuel injection nozzles are clogged or faulty - Replace injection nozzles.
Fuel hoses or lines clogging - Fuel lines and hoses need to be cleaned.
Clogged air filter element - Air filter maintenance required.
Damaged cylinder-head gasket - Change cylinder head gasket.
Wrong injection timing - Set up as recommended.
Fuel injection pump failure - Replacement or repair required.
One of moving engine components has failed - Change or repair damaged parts.
| Engine overheated |
Clogged radiator fins or damaged radiator cap - Clean radiator or change cap.
Low coolant level - Refill to the correct level and inspect system for leaks.
Fan belt slipping or worn - The fan belt needs to be replaced.
Engine oil level is low - Check and refill engine oil.
Cylinder head gasket is defective - Install new cylinder head gasket.
Incorrect injection timing - Adjust according to specifications.
| Oil pressure is low |
Oil level is insufficient - Add oil to the engine crankcase.
Oil pump is damaged - Replace as required.
Engine oil filter is plugged - Service or replace engine oil filter.
Relief valve is defective or dirty - Relief valve need to be replaced or cleaned.
Excessive oil clearance of crankshaft bearing - Check and replace or repair defective parts.
Excessive crankpin bearing clearance - Check and change or repair defective parts.
| High engine oil consumption |
Oil leakage: Gaskets or seals may be damaged - To repair leaks, replace worn parts.
Wrong oil viscosity - Use correct viscosity oil.
Piston rings are defective or worn - Piston rings need to be replaced.
Damaged valve guides or valve stems - Change the valves.
Cylinder liners or pistons are scored - Check pistons and liners, replace as required.
| Abnormal engine knocking or noise |
Coolant temperature is low - Warm up engine as required.
Low engine oil level - Need to add engine oil.
Improper setting of fuel injection pump timing - Set the fuel pump timing correctly.
Worn or scored pistons - Pistons replacement required.
Connecting rod misalignment or failure - Align or replace connecting rod.
| Starter turns slow |
Low battery voltage - Battery needs to be recharged.
Battery won’t hold charge - Service battery or change it.
Battery cables are disconnected or terminals are faulty - Connect wires correctly or change terminals.
| Starter is not cranking |
Battery is discharged or defective - Change or recharge battery.
Battery wiring is disconnected or improperly connected - Inspect wiring and connect as required.
Battery power is low - Low battery charging, charge as required.
Starter motor is defective - Repair or change starter.
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| Engines Technical Specifications |