________________________________________________________________________________________
| Home / Car Engines / Toyota Engines / Toyota 2ZR-FAE |
Toyota 2ZR-FAE Troubleshooting
| Engine hard to start or doesn't start |
Fuel tank is empty - Add gasoline.
Wrong grade of gasoline - Use quality gasoline.
Air in the fuel pipes - Bleed the fuel pipes.
Damaged spark plug wiring connection - Check spark plug wiring connection, repair or change.
Damaged spark plug - Change spark plug.
Ignition system problems - Test ignition and replace failed parts.
Fuel filter is clogged - Replace fuel filter.
Restricted fuel lines - Service fuel lines.
Fuel pump is faulty or clogged - Clean or install new fuel pump.
Fuel injectors are faulty or clogged - Service or change fuel injectors.
Bad compression - Check and change damaged parts.
| Engine runs intermittently |
Defective ignition system - Check ignition system and replace faulty parts.
Air filter element is clogged - Replace or clean air filter.
Defective spark plug - Change spark plug as required.
Fuel pump is faulty or clogged - Check fuel pump and change if required.
Valve clearance is improper - Adjust valve clearance according to specifications.
Ignition timing is improper - Adjust ignition timing correctly.
Incorrect low idle setting - Correct idle adjustment.
| Engine starts and stalls suddenly |
Faulty spark plug - Change spark plug.
Fuel injectors are faulty or clogged - Check fuel injectors and replace if necessary.
Defective ignition coil - Replace ignition coil as necessary.
Valve springs are weak or broken - Install new valve springs.
Valves are stuck - Valves must be cleaned.
| Engine overheating |
Engine oil level is low - Fill up the engine oil.
Engine is under excessive load - Reduce engine load.
Fuel injectors are dirty - Test fuel injectors and service if necessary.
Improper ignition timing - Ignition timing needs to be adjusted correctly.
Valve setting is wrong - Set the valves properly.
Radiator fins are dirty or radiator cap is defective - Install new cap or clean radiator.
Lack of coolant in cooling system - Refill to the correct level and inspect system for leaks.
Faulty thermostat - Replace thermostat.
Water pump failure - Change water pump as required.
| Engine noise or knocking |
Stale fuel - Use correct fuel.
Excessive engine load - Load reducing is recommended.
Engine oil level is low - Fill up the engine oil.
Low idle speed adjustment is incorrect - Adjust as required.
Dirty or damaged fuel pump - Inspect fuel pump and change as required.
Crankshaft or main bearings failure - Replace crankshaft or bearings.
Improper valve clearance - Check and adjust.
Cylinder bore or piston rings are worn - Replace defective parts.
| Engine power loss |
Dirty or damaged fuel injectors - Check fuel injectors and change if required.
Air filter element is plugged - Clean or change air filter.
Fuel pump is dirty or defective - Service or replace fuel pump.
Ignition system malfunction - Check ignition system and replace faulty parts.
Worn cylinder head gasket - Replace the head gasket.
Burned or stuck valves - Replace or service valves.
Cylinder block parts are damaged - Change defective parts.
Plugged oil filter - Clean or change oil filter.
| Excessive fuel consumption |
Dirty air filter element - Clean or replace air filter.
Dirty or damaged fuel injectors - Service or change fuel injectors.
Loose or defective spark plug - Tighten or change the spark plug.
Ignition timing is wrong - Adjust ignition timing as required.
Valves are stuck, worn, or burned - Service or change valves.
Worn sleeve, rings, or piston - Replace faulty components.
Valve clearance is wrong - Adjust to proper valve clearance.
Bad compression - Check and change damaged parts.
| Excessive engine oil consumption |
Worn gaskets or seals - Replace defective parts.
Valve guides or stems are damaged - Valves must be replaced.
Piston rings are defective or worn - Piston rings need to be replaced.
Damaged piston or cylinder liner - Inspect piston and liner, change as required.
| Engine backfires |
Fuel injectors are clogged - Service or change fuel injectors.
Restricted fuel lines - Clean fuel system lines.
Wrong ignition timing - Set the ignition timing properly.
Valve setting is incorrect - Valves needs to be adjusted properly.
Air filter is dirty - Change or clean air filter.
________________________________________________________________________________________
________________________________________________________________________________________
| Engines Technical Specifications |