I got it, Jeff.....
Thanks,
Miguel

I have not failed. I've just found 10,000 ways that won't work.
  - Thomas A. Edison

On Mon, Mar 15, 2010 at 1:43 PM, neil n <musomuso@gmail.com> wrote:
> On 3/15/10, miguel pacheco <mundopacheco@gmail.com> wrote:
>> Insulating the pump brings up a couple of thoughts. The first is the
>> obvious heat issue. These pumps are cooled by the fuel they move and
>> must be, to some extent, by air blowing across the exterior surface.
>> If you've insulated the pump, will the fuel cool it sufficiently?
>> Won't this cause it to run hot and result in failure? The second
>> thought is that if you can hear the pump, there's something wrong.
>> Usually, this means that it is fuel starved or it's getting ready to
>> fail. In short, it may be useful to be able to hear the pump, should
>> it ever start making noise.
>> If the pump is properly installed and it is making noise, it's
>> probably fuel starved. At 20+ years old,  you can look to the fuel
>> tank as the cause.
>> Miguel
>
>
> I was thinking of pump cooling not long ago. During my last trip
> through hotter climes, pump was getting louder. In particular noticed
> this after refueling, restarted, at idle. Pump noisier than normal.
> Likely due to heat affecting fuel in tank, (contributing to pump
> cavitation?) but I wondered if pump itself was being affected by
> ambient temps. Pump is almost new but fuel tank has the smaller ID
> outlet. This doesn't help.
>
> In terms of cooling, I wondered if having the belly pan off would help.
>
> As per Davids comment, he beat me to the punch. (my browser quite
> before I could post!)
>
> Could one use a Bosal DV type exhaust hanger (isolater)?
>
> Cheap.
>
> Neil.
>
> --
> Neil Nicholson '81 VanaJetta 2.0 "Jaco"
>
> http://tubaneil.googlepages.com/
>
> http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engines
>