1. Check the vacuum hoses and lines for any leaks. Replace any damaged hoses or lines.
2. Check the EVAP canister and purge valve for any damage or leaks. Replace if necessary.
3. Clean the throttle body and intake.
4. Check the oxygen sensor and replace it if it is faulty.
5. Check the fuel pressure and fuel injectors.
6. Inspect the fuel cap for cracks and replace it if needed.
7. Check the catalytic converter for any damage and replace if needed.
8. Perform a smoke test to check for any leaks in the EVAP system.
If the above steps do not resolve the issue, you may need to take your vehicle to a qualified mechanic for further diagnosis and repair.
