I bought an 84 Westy some years back with a real noisy pump. The guy
who sold it to me told me he had tried to figure it out, it was a new
pump & he'd covered it with something to quiet it down but it was
still noisy.
I put a new gas tank in and that cured the noise problem! I opened the
old tank but saw nothing wrong..

Rob
vwrobb@gmail.com

On Sun, Sep 4, 2022 at 6:35 AM Eric Caron <ericcaron96@comcast.net> wrote:
>
> So, both pumps sound unhappy when hooked up though a bit better with the new gas filter.
>
> Is there a good way to bench test my fuel pump to see if quiet when not hooked to tank?
>
> I’d like to know if I just have some loud unhappy sounding fuel pumps or if it is something to do with my tank.
> Concerns me that this new Bosch pump sounds as unhappy as my current Amazon one I just removed.
>
> Considering asking a friend to hook up power from an extra battery I have here, to bench test, but would need to run gas as I test.
>
> Crazy idea?
>
> Why do it?
>
> I’m concerned that crud might be getting to my engine perhaps sticking fuel injectors.
> Also the sound of the pump is creepily like the starting sound of a differential with gears starting to wine.  Every time I hear that sound as we come to a stop my heart skips a beat.  After loosing three differentials all starting with that sound I just don’t want to hear it every time I go out for a ride.
> Anyone got a new old Bosh fuel pump or a good used one that is quiet?
>
> Eric Caron 85 GL  auto
>
>
>
> > On Sep 3, 2022, at 11:34 AM, OlRivrRat <OlRivrRat@COMCAST.NET> wrote:
> >
> > On 3 Sep , 2022, at 8:27 AM, Eric Caron <ericcaron96@COMCAST.NET> wrote:
> >>
> >> I’m planning to try to blow back with air compressor to see if that even temporarily changes the sound.
> >
> >        Compressed Air for that purpose should not be more than Lung Pressure >
> >
> > Clamp the hose between Tank & Fuel Pump, connect a long clean hose to that hose & gently blow with mouth
> >
> > as needed to hear bubbles in tank with GasCap removed ~