# 2004 Ford F-150 - Exhaust smell from vents **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** ford\ **Created:** [June 10, 2022, 7:02pm UTC](https://community.cartalk.com/t/2004-ford-f-150-exhaust-smell-from-vents/184597 "2022-06-10T19:02:17Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![gene15](https://avatars.discourse-cdn.com/v4/letter/g/a9adbd/32.png) [@gene15](https://community.cartalk.com/u/gene15)\ **Post date:** [June 10, 2022, 7:02pm UTC](https://community.cartalk.com/t/2004-ford-f-150-exhaust-smell-from-vents/184597/1 "2022-06-10T19:02:17Z")
Exhaust smell comes through vents only when heater is turned on ---
**Author:** ![VDCdriver](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/vdcdriver/32/30_2.png) [@VDCdriver](https://community.cartalk.com/u/VDCdriver)\ **Post date:** [June 10, 2022, 7:16pm UTC](https://community.cartalk.com/t/2004-ford-f-150-exhaust-smell-from-vents/184597/2 "2022-06-10T19:16:18Z")
Apparently the HVAC fan is pulling-in fumes from… somewhere. I would check for oil leaks under the hood that are being vaporized by the hot engine, because oil fumes are frequently mistaken for exhaust fumes. If there is no oil leak, then you have to assume that you are smelling exhaust fumes, and that is definitely dangerous for you and your passengers. An exhaust leak could be coming from the exhaust manifold(s), or from the exhaust pipe, and I suggest that you have a mechanic or a muffler shop check-out the source of the problem before you and your passengers wind-up with Carbon Monoxide poisoning. ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [June 10, 2022, 7:37pm UTC](https://community.cartalk.com/t/2004-ford-f-150-exhaust-smell-from-vents/184597/3 "2022-06-10T19:37:32Z")
Check if the rear hood seal is lose/damaged. ![image](https://global.discourse-cdn.com/cartalk/original/3X/d/1/d1c484300abbc5cc8bd7fdf60dfeb2e83feade5f.jpeg) Tester ---
**Author:** ![weekend-warrior](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/weekend-warrior/32/26122_2.png) [@weekend-warrior](https://community.cartalk.com/u/weekend-warrior)\ **Post date:** [June 10, 2022, 8:31pm UTC](https://community.cartalk.com/t/2004-ford-f-150-exhaust-smell-from-vents/184597/4 "2022-06-10T20:31:24Z")
If you do hear an exhaust leak, places to check around those year trucks are… the exhaust manifolds tend to get pin holes in them. The manifold gaskets leak, the EGR tube running from the top to the exhaust manifold tend to rot out. the connection from the exhaust manifold to the exhaust pipe can leak. ---
**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:** [June 17, 2022, 1:28am UTC](https://community.cartalk.com/t/2004-ford-f-150-exhaust-smell-from-vents/184597/5 "2022-06-17T01:28:52Z")
Might be worth the time to read about the problem of exhaust entry into Ford Explorer cabins. On that vehicle claimed to involve “bumpers and tailpipes, the sheet metal panels and overlaps, the rear air extractors, and the auxiliary air conditioning systems.” Probably unrelated to F150, but might find something useful. > **[The Ford Explorer Carbon Monoxide Lawsuit Finally Has a Settlement](https://www.motorbiscuit.com/the-ford-explorer-carbon-monoxide-lawsuit-finally-has-a-settlement/)** > > After complaining of ongoing issues with carbon monoxide odor, Ford Explorer drivers have reached a settlement agreement with Ford. The lawsuit impacts