[s-cars] fuel vapor on warm days . . .

[marc weiner]

It isn't leaking fluid - just vapor - I actually asked the dealer about this last summer and they said it was a vent for hot days to keep the car from vapor locking . . it is a 1/2" plastic tube that runs back from behind the passenger wheel well under the car about 6-12" and is open ended.  it doesn't look as if it was ever meant to connect to anything else and looks like it is there for a purpose, it just seem that lately I have been getting more of the vapor on hot days than I had before . . . and was wondering if maybe I am running a little on the rich side . . . I had the fuel line recall done a few years back and it seems to be fine, my fuel economy is great - about 20 mpg even with all the h.p./boost my car runs.   thanks again for your concern and look forward to continuing this thread for ideas . .. let me know if any of you don't have this plastic tube extending from the back side of your passenger wheel well = it is easily seen if you look under the car under the passenger door area about 6" in from the edge of the underside of the car.
  ----- Original Message ----- 
  From: Robert Myers 
  To: marc weiner ; s-car-list at audifans.com 
  Sent: Sunday, April 04, 2004 7:14 PM
  Subject: Re: [s-cars] fuel vapor on warm days . . .



  Marc,

  There should be NO fuel vapor vented on warm days or cold days or any other days.  This is a major violation of environmental laws for a manufacturer to use such a "feature".  The car is not designed to do this.  Have you examined the leak closely?  Was (is?) your car part of the fuel line recall of a few years back?  If so, was the fuel line replacement done at that time?  In any case, it sounds like you have a leaking fuel line which is a major hazard and which should be repaired or replaced ASAP.

  A common place for such a leak to develop is under/inside a rubber mounting fastener which holds the line in position under the car.

  At 07:05 PM 4/4/2004 -0600, marc weiner wrote:


    There is a tube that runs under the passenger side of the car that vents fuel vapor on warm days . . . after a good hard run home from work my garage fills up with fuel vapor from the under side of the car.  Does this happen to anyone else . . . this really started happening a lot last summer and starting to notice it again . . . not really noticeable at all this last winter.  I am running Hoppen/Lehman stage IV software (26-27 max overboost), 8.5:1 compression pistons, RS2 turbo, RS2 extrude honed ex. manifold, RS2 injectors, Lehman modified cyl. head, Strommung 3" turbo back exhaust (mit cat), stock MAF, metal bypass valve.  I had the dealers recall done on the fuel line so that is definitely not where the vapor is coming from.  In fact I can get under the car and see the fumes coming out of the tube I decribed on a hot day.   Is the just something normal . . . I just can't believe how vaporous the garage smells and even my wife can tell it aint coming from my backside.   TIA.  
    -Marc
    94 Pearl White S4 with all the goodies above + Bilstein/Eibach suspension, S6+ euro brake kit w/ 323x30 rotors and stainless brake lines, 3 spoke A4/S6 sport steering wheel, ASW camber plates, Centerforce Clutch, and a whopping 212,000 miles (112,000 miles since the upgrade from Stage III to IV) ( 137k miles since stage III went on at 75,000 miles, and the suspension on for 162k miles) - car has had 3 timing belt changes to date.
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   Robert L. Myers  304-574-2372    
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   '95 urS6 Cashmere Grey - der Wunderwagen   ICQ 22170244          
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