- Check engine light: A loose or damaged gas cap can cause a check engine light to come on.
- Fuel smell: A faulty gas cap can allow fuel vapors to escape, causing a noticeable fuel smell around your vehicle.
- Difficulty refueling: If you're having difficulty getting the fuel pump nozzle to fit into your gas tank, it may be due to a damaged or loose gas cap.
- Gas cap rattling: A loose gas cap may rattle while driving, indicating that it needs to be tightened or replaced.
- Visible damage: If you notice visible cracks, chips, or other damage to the gas cap, it should be replaced immediately.