Dave,
   Lowering the voltage mostly changes the speed and hence frequency emited,
by the fuel pump (I did some experimenting where I ran the engine
electronics off solar powered batteries).  It is still just as loud. I am
wondering if the rubber vibration isolation stand-off has hardened over
time. It might be easier to invest time and energy in that area instead.

Ken Lewis
http://neksiwel.20m.com/
in statu viae
----- Original Message -----
From: "Dave Arthur" <dave.arthur@NSCC.CA>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Sunday, June 28, 2009 9:33 AM
Subject: Re: [VANAGON] Fuel Filter "Update" Results

> So, is it fair to say that a noisy FP may be caused by the pump delivering
> too much volume? Does the list have any advice on what resistance to use
> or
> what wattage has been used to 'slow' down the pump?
>
> Thanks
>
> D