Done with beer. ;) Noise was same at sea level as 8,000 feet.

Geneva and/or Mike Saint-Amour
www.slowcarfasthouse.com

> On Dec 6, 2014, at 12:54 PM, Neil N <musomuso@GMAIL.COM> wrote:
>
> At the risk of interrupting your beer.....   ;)
>
> Did you find that the pump noise was worse at higher altitudes?
>
> I posted to the list of this, but on a long trip last Summer, waaaaay
> up in the mountains,
> my '81 developed vapour lock causing the engine to stall. Pump was
> quite noisy prior. After that, it drove fine at sea level or slightly
> higher.
>
> When i got home, at sea level, as per the Bentley test I did a quick
> test of the evap system by blowing into the small tube that connects
> to the inlet of charcoal filter. I could hear a slight "hissing" sound
> near the fuel tank. There should obviously be no leaks between this
> small tube and the rest of the evap system. How the bus developed a
> case of vapour lock is a bit of a mystery.
>
> My working theory at the time of vapour lock was that the evap system
> was not venting correctly. Although I suspect there's a flaw in the
> evap system, (the "hiss") I'm curious if altitude affects a marginal
> part in the evap system and-or fuel tank.
>
> Neil.
>
>> On 12/5/14, Geneva Saint-Amour <genevasaintamour@hotmail.com> wrote:
>>
>> Stuart-
>> We drilled a hole in each tank. The fuel pump is back to peaceful pumping.
>> No squealing.
>> Muchas gracias. Now for that beer!
>
>
>
> --
> Neil n
>
> Blog: Vanagons, Westfalia, general <http://tubaneil.blogspot.ca>
>
> 1988 Westy Images <https://picasaweb.google.com/musomuso/New1988Westy>
>
> 1981 Westfalia "Jaco" Images, technical <http://tubaneil.googlepages.com/>
>
> Vanagon-Bus VAG Gas Engine Swap Group <http://tinyurl.com/khalbay>