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Ford Mustang V6 2005-2014: Why Is There Gas Smell Coming From My Car?

Nothing is more annoying than the smell of gas in the car, and by gas, I mean fuel not the other type of gas...

By AJ Mawley - December 3, 2015

This article applies to the Ford Mustang V6 (2005-2014).

The smell of gas in the cabin of your Mustang is never good! Not only is it harmful to your health, but it is indicative of a fuel leak somewhere in your fuel system, which can be very dangerous depending on where it is. Tracking down this leak can be difficult since gas evaporates fairly quickly; however, with a careful eye and nose, you will be able to pinpoint the location of the leak. The worst thing you can do is leave the gas leak unattended, as it can lead to a fire and terrible consequences. If you smell gas, find the leak and treat it immediately!

Materials Needed

  • Flashlight
  • Socket set and ratcheting wrench

Step 1 – Check your gas cap

A loose or missing gas cap are obvious methods of gas fumes entering your Mustang's cabin.

  • Open the gas door and check if the smell of gas intensifies.
  • Check to see if the cap is on tight.
  • If the cap is on tight but you still suspect it to be an issue, it's good peace of mind to replace it, as it is only a few dollars and brand new.
Figure 1. Gas cap.

Step 2 – Check your fuel injectors

The fuel injector seals wear out over time and are common causes of gas smells.

  • The fuel injector seals degrade over time. Run the engine and look at the injectors. If you see a noticeable leak around the injector seal, then replace the seal.
  • Try to trace any fuel residues in the engine bay to find the location of the leak.
Figure 2. Injector seals.

Step 3 – Check fuel EVAP canister hoses

Heat in the engine bay can cause the charcoal canister hoses to crack and let off gas fumes.

  • Locate your charcoal canister and look for signs of leakage around the hose.
  • Check to see if the hoses are dry-rotted in any areas, which can cause a leak.
  • Replace hoses as necessary.
Figure 3. EVAP canister location.

Step 4 – Check fuel lines and fuel tank

Check under your car for obvious fuel leaks or puddles under the car.

  • Start at the fuel tank and trace the fuel lines towards the front of the car all the way up to the rail to find any leaks.
  • Look for any damp spots on the hoses and lines to narrow down the location of the leak.
  • Replace the fuel line or fuel tank if the leak is found to be in these locations.
  • Figure 4. Gas tank leak.
  • Figure 5. Fuel line leak.

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