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

[Jerry Scott]

This always happens about this time of year in my car here in Denver.  
This is the alcohol in the fuel boiling off due to the early heat.  They 
have not yet changed the formula to summer and the vapor pressure in the 
tank is very high.  If you release the gas cap you can hear it boiling.  
This is not a leak but vapor getting past the canister.
Jerry Scott

Robert Myers wrote:

>
> 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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>
>
> ____
>
> Lies - the real Weapons of Mass Destruction!
>
> Bob
> *****
>  Robert L. Myers  304-574-2372
>  Rt. 4, Box 57, Fayetteville, WV 25840 USA  WV tag Q SHIP
>  '95 urS6 Cashmere Grey - der Wunderwagen   ICQ 22170244
>  http://www.cob-net.org/church/pvcob.htm
> *****
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