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Old 06-06-2013, 09:06 PM   #1
dancmos
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Gas smell at altitude

I drove my '00 323i up Pikes Peak today. It ran just fine, but suddenly at about 12,000 ft altitude, we started to smell fumes. We checked thoroughly for any leaks and saw none. We drove up to the summit at 14,000. Again, no leaks and the car ran fine.

On the way back down, the smell went away at around 11,000 feet. And still no leaks and no smell whatsoever.

Any ideas?
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Old 06-06-2013, 11:04 PM   #2
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There might be a weak spot somewhere in the evap system on your car and gas fumes were able to escape due to the lower of atmospheric pressure at the high altitude?

Pikes Peak sounds like a lot of fun, I am putting it on my road trip to do list.
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Old 06-06-2013, 11:06 PM   #3
dancmos
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Originally Posted by lszlszx View Post
There might be a weak spot somewhere in the evap system on your car and gas fumes were able to escape due to the lower of atmospheric pressure at the high altitude?

Pikes Peak sounds like a lot of fun, I am putting it on my road trip to do list.
Hmmm, that makes sense. My nephew was with me and he's a mechanic and he thought it might be the evaporative system as well.
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Old 06-06-2013, 11:23 PM   #4
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There is supposed to be a pressure test for the evap system to locate leaks. I don't know how it's done, but short of that maybe you can just do a visual inspection in the area of the car where the smell was coming from.
It might be a loose clamp due to deterioration of a hose under it.
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Old 06-06-2013, 11:37 PM   #5
dancmos
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Thanks so much!

Quote:
Originally Posted by lszlszx View Post
There is supposed to be a pressure test for the evap system to locate leaks. I don't know how it's done, but short of that maybe you can just do a visual inspection in the area of the car where the smell was coming from.
It might be a loose clamp due to deterioration of a hose under it.
I'll do that. It seems like fumes in the cabin are a bad idea
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Old 06-06-2013, 11:49 PM   #6
trj
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Gas smell at altitude

Pikes peak road is open now?
Great. That's the trip I make two times a year. Early in the season and later in the season.

I know where to go next weekend when I finish dealing with the creaking noise with the suspension.

About your issue, check the hoses at the fuel filter and the fuel rail on the manifold. If you are smelling inside the cabin the leak might be at the rails.


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Old 06-06-2013, 11:51 PM   #7
dancmos
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Will do that

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Pikes peak road is open now?
Great. That's the trip I make two times a year. Early in the season and later in the season.

I know where to go next weekend when I finish dealing with the creaking noise with the suspension.

About your issue, check the hoses at the fuel filter and the fuel rail on the manifold. If you are smelling inside the cabin the leak might be at the rails.


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Today was the first day it was open. I'll check those hoses too.

I did a little write up on the drive up with pix.

http://oppositelock.jalopnik.com/a-l...peak-511801476
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Old 06-07-2013, 11:12 AM   #8
trj
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Today was the first day it was open. I'll check those hoses too.

I did a little write up on the drive up with pix.

http://oppositelock.jalopnik.com/a-l...peak-511801476
Nice write up man.
I might hit it up next week.
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Old 06-07-2013, 11:30 AM   #9
Patton323I
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I wish I could drive up a mountain pass....
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Old 06-07-2013, 04:35 PM   #10
Yewzer B Lewzer
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Gas smell at altitude

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I wish I could drive up a mountain pass....
Blue ridge parkway isn't far from you right?


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Old 06-07-2013, 04:41 PM   #11
Solidjake
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Gas smell at altitude

Damn. Congrats on getting up to pikes peak!! I was amazed going up in the Rockies to 11k feet


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Last edited by Solidjake; 06-07-2013 at 04:41 PM.
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Old 06-07-2013, 06:46 PM   #12
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Damn. Congrats on getting up to pikes peak!! I was amazed going up in the Rockies to 11k feet


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Jake, I really wished you could go to Pikes peak and Mt.Evans on your stopover at Denver. But those roads were still closed for the season.
Those are two places that everyone should drive by on their e46. Thats where it really shines.
Another pass is the independence pass. From Golden to Aspen, CO. One of the best drives I ever took in my car.
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Old 06-07-2013, 07:15 PM   #13
dancmos
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Gas smell at altitude

One day at 7k feet with no fume smell. I haven't had time to look at the potential culprits.


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