# Gas smell from vents. What is this part?

**URL:** <https://community.cartalk.com/t/gas-smell-from-vents-what-is-this-part/193170>\
**Category:** Maintenance/Repairs\
**Tags:** mercury, grand-marquis\
**Created:** [October 1, 2023, 10:07pm UTC](https://community.cartalk.com/t/gas-smell-from-vents-what-is-this-part/193170 "2023-10-01T22:07:06Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![DougCarTalk\_187097](https://avatars.discourse-cdn.com/v4/letter/d/4da419/32.png) [@DougCarTalk\_187097](https://community.cartalk.com/u/DougCarTalk_187097)\
**Post date:** [October 1, 2023, 10:07pm UTC](https://community.cartalk.com/t/gas-smell-from-vents-what-is-this-part/193170/1 "2023-10-01T22:07:06Z")

</div>

I have a picture of a part by my gas tank in a 2011 Mercury Grand Marquis. It’s leaking gas.  
When i run the heat or AC it smells like gas. And if it sits for a while, it has a hard time starting. No dash lights though.

Is this the fuel pressure regulator?

 ![IMG_20231001_171602](https://global.discourse-cdn.com/cartalk/original/3X/c/4/c4753c531056a22aa0fb5b8cb2856b4d3f7d2487.jpeg)

---

<div class="post-metadata">

**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\
**Post date:** [October 1, 2023, 10:11pm UTC](https://community.cartalk.com/t/gas-smell-from-vents-what-is-this-part/193170/2 "2023-10-01T22:11:32Z")

</div>

It sort of looks like something associated with the evap system, maybe the charcoal canister. Doesn’t matter what it is, the leak must be stopped asap as it presents a car-fire hazard…

---

<div class="post-metadata">

**Author:** ![db4690](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/db4690/32/2583_2.png) [@db4690](https://community.cartalk.com/u/db4690)\
**Post date:** [October 1, 2023, 10:12pm UTC](https://community.cartalk.com/t/gas-smell-from-vents-what-is-this-part/193170/3 "2023-10-01T22:12:18Z")

</div>

your fuel filter is rusted out and leaking

---

<div class="post-metadata">

**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\
**Post date:** [October 1, 2023, 10:12pm UTC](https://community.cartalk.com/t/gas-smell-from-vents-what-is-this-part/193170/4 "2023-10-01T22:12:55Z")

</div>

It is a fuel filter but the leak may be the lines and not the filter. Since you asked this question and leaking gas is dangerous, I advise you to take it to a well rated independent auto repair shop. Now, don’t wait.

---

<div class="post-metadata">

**Author:** ![davesmopar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/davesmopar/32/41750_2.png) [@davesmopar](https://community.cartalk.com/u/davesmopar)\
**Post date:** [October 2, 2023, 1:43pm UTC](https://community.cartalk.com/t/gas-smell-from-vents-what-is-this-part/193170/5 "2023-10-02T13:43:37Z")

</div>

+1 for above…

No disrespect but if you are asking if a fuel filter is a fuel pressure regulator, then you should not attempt to DIY, gasoline is highly flammable and can be very dangerous…  
Anytime gas is leaking it is advised to have the vehicle towed to a shop…