- Clogged fuel filter: Check and replace if necessary.
- Faulty fuel pump: Ensure the fuel pump is delivering enough fuel to the engine.
- Check fuel pressure and fuel injector operation
2. Air Intake System Issues:
- Clogged air filter: Clean or replace if necessary.
- Vacuum leaks: Inspect for any loose or damaged vacuum hoses.
3. Ignition System Issues:
- Faulty spark plugs: Check for worn or fouled spark plugs and replace as needed.
- Ignition Coil problems: Check ignition coils and connections
4. Engine Management System Issues:
- Faulty sensors (Crankshaft position sensor, camshaft position sensor): Ensure these sensors are working properly.
5. Mechanical Issues:
- Timing belt/chain issues: Check if the timing belt or chain is correctly positioned.
- Engine compression: Perform a compression test to check cylinder compression.
6. Electrical Issues:
- Faulty battery or alternator: Ensure the battery is providing sufficient power and the alternator is charging properly.
- Starter problems: Check if the starter is functioning correctly.
7. Immobilizer Problems:
- If your SC300 is equipped with an immobilizer system, there could be a problem with the key or the immobilizer module.
Note: It is recommended to have the vehicle inspected by a qualified mechanic to accurately identify the root cause of the problem.
