why does my Toyota Highlander Third Generation (2014-2019) have a gas smell inside

Solution

1. Preparation

• Gather tools: socket set, wrench set, OBD-II scanner, flashlight, shop towels.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal to prevent any electrical issues.

2. Inspect and Repair Fuel Lines

• Sub-steps:
  1. Remove any underbody covers if necessary for better access.
  2. Visually inspect all fuel lines from the fuel tank to the engine.
  3. Tighten any loose connections.
  4. Replace any damaged or cracked fuel lines with OEM parts.

3. Check and Replace Fuel Injectors

• Sub-steps:
  1. Remove the engine cover (if applicable).
  2. Disconnect the electrical connectors from the fuel injectors.
  3. Remove the injector retaining bolts and carefully pull out the injectors.
  4. Inspect the O-rings on the injectors; replace if damaged.
  5. Reinstall the injectors, ensuring they are seated correctly, and reconnect the electrical connectors.

4. Inspect and Repair Fuel Tank

• Sub-steps:
  1. Safely raise the vehicle using jack stands.
  2. Inspect the fuel tank for any signs of rust, damage, or leaks.
  3. Check the tank straps and mounting points for integrity.
  4. If a leak is found, consider replacing the fuel tank or using a sealant approved for fuel tanks.

5. Final Steps

• Reconnect the battery terminal.
• Start the engine and monitor for any fuel smells or leaks.
• Conduct a test drive to ensure the issue is resolved.