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| Home / Car Engines / Toyota Engines / Toyota 3S-GE |
Toyota 3S-GE Troubleshooting
| Engine doesn't start or hard to start |
No gasoline in tank - Fill fuel up.
Wrong fuel grade - Change gasoline.
Air in the fuel system - Air bleeding.
Defective wiring connection of spark plug - Check spark plug wiring connection, repair or change.
Damaged spark plug - Change spark plug as required.
Ignition system malfunction - Inspect ignition system and change failed components.
Dirty fuel filter - Install new filter.
Fuel lines are dirty - Service fuel lines.
Fuel pump is clogged or faulty - Test fuel pump and change if necessary.
Clogged or damaged fuel injectors - Test fuel injectors and replace if necessary.
Weak cylinder compression - Inspect cylinder block and change worn parts.
| Irregular engine running |
Ignition failure - Check ignition and replace faulty components.
Clogged air filter - Change or service air filter.
Damaged spark plug - Install new spark plug.
Clogged or defective fuel pump - Check fuel pump and change if required.
Improper valve clearance - Adjust valve clearance according to specifications.
Ignition timing is wrong - Adjust ignition timing correctly.
Incorrectly adjusted low idle speed - Test and adjust.
| Engine starts and stops suddenly |
Spark plug is faulty - Replace spark plug.
Clogged or damaged fuel injectors - Clean or change fuel injectors.
Damaged ignition coil - Install a new ignition coil.
Valve springs are loose or broken - Valve springs need to be changed.
Valves sticking - Valves must be cleaned.
| Engine overheats |
Low engine oil level - Check and refill engine oil.
Engine is running overloaded - Reduce load.
Fuel injectors are clogged - Clean or change fuel injectors.
Bad ignition timing - Adjust ignition timing correctly.
Valve setting is wrong - Set the valves correctly.
Clogged radiator fins or leaking radiator cap - Clean radiator or change cap.
Low engine coolant - Add coolant and check the components of cooling system.
Thermostat failure - Install new thermostat.
Damaged water pump - Replace water pump.
| Engine knocking or noise |
Stale or low octane fuel - Use correct fuel.
Excessive engine load - Load reducing is recommended.
Engine oil insufficient - Check and refill engine oil.
Incorrect low idle setting - Need to adjust idle speed.
Dirty or faulty fuel pump - Test fuel pump and change if necessary.
Crankshaft or main bearings failure - Replace crankshaft or bearings.
Valve clearance is wrong - Adjustment procedure required.
Damaged cylinder bore or piston rings - Change faulty components.
| Engine lacks power |
Fuel injectors are dirty or defective - Check fuel injectors and change if required.
Air filter is dirty - Replace or clean air filter.
Clogged or defective fuel pump - Service or replace fuel pump.
Ignition failure - Check ignition and replace faulty components.
Blown cylinder head gasket - Replace the gasket as required.
Valves are stuck or burned - Change or clean valves.
Cylinder block parts are worn out - Change defective parts.
Oil filter is blocked - Clean or change oil filter.
| High fuel consumption |
Air filter element is plugged - Clean or change air filter.
Fuel injectors are damaged or dirty - Check fuel injectors and change if required.
Spark plug is loose or defective - Replace or tighten spark plug.
Incorrect ignition timing - Adjust ignition timing correctly.
Valves are worn, burned or stuck - Service or replace valves.
Worn piston, rings, or sleeve - Replace faulty parts.
Valve clearance is wrong - Check and adjust.
Poor compression - Inspect and replace wear parts.
| Excessive oil consumption |
Seals or gaskets are wearing excessively - Replace to repair leaks.
Damaged valve guides or valve stems - Replace defective valves.
Piston rings are stuck or worn - Piston rings need to be replaced.
Scored piston or cylinder liner - Inspect liner and piston, change as necessary.
| Engine backfires |
Dirty fuel injectors - Clean or change fuel injectors.
Fuel lines are dirty - Clean fuel system lines.
Improper ignition timing - Adjust ignition timing correctly.
Valve setting is wrong - Set the valves properly.
Air filter element is plugged - Clean or replace air filter.
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