Date: Mon, 22 Jul 2013 20:37:57 -0700
Reply-To: Don Hanson <dhanson928@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Don Hanson <dhanson928@GMAIL.COM>
Subject: Re: Fuel pump noise? Fuel filters.
In-Reply-To: <BAY179-DS13402A3AEE4874DD4B35EDA06F0@phx.gbl>
Content-Type: text/plain; charset=ISO-8859-1
I don't think you are right, Dennis. The motorcycle that filter was
used on has more HP than the Vanagons or my inline Jetta motor. The inlet
and outlet are the same size as the post-pump filterr.. The gas flow has
to be similar between a 900cc high-performance motorbike at 32O lbs and a
~2000cc vehicle weighing 4000lbs.
The larger diameter of the moto-filter cannister leads me to guess there
is more surface area in the filter element, hence less restriction than
those tiny little square filters some Vanagons have, especially as it does
it's job and collects crud on the element....... It must have about 10
times the internal volume, compared to the Vanagon one...again guessing on
the math.
Whatever...it will likely filter out dead mice from the tank, or rust or
crap from Mexican Pemex pumps or other possible 'pump busters'...Seems to
work for me, and I have had plenty of experience with poor gasoline,
filters, motorbikes, etc..
When I change out this one, coming due this fall, I will probably just
find one in one of the racers supply catalogs or online.. Fuel pumps are
pricey...filters are pretty cheap.. I don't like the plastic ones, being
exposed to road debris as they are on the Vanagon...
I agree on checking the pump mounting..make sure there is good isolation
from the frame, etc. And....remember, sound travels very well indeed
through liquid...so isolating ( with some sort of rubber mounting ) your
post-pump filter might help with the noisy FP also...
On Mon, Jul 22, 2013 at 5:57 PM, Dennis Haynes <d23haynes57@hotmail.com>wrote:
> The size of a filter on the outside has little influence on what can be on
> the inside. The original pre-pump filter has a lot of filter material
> crammed in there designed to handle the flow (liters per minute) that the
> fuel pump can move. I doubt a filter designed for the carburetor on that
> motor cycle is designed to handle the fuel in its lifetime that the Vanagon
> pump moves in an hour. As it loads up and starts to restrict flow you won't
> even know because the element will rip away in there somewhere so the fuel
> will just continue to flow.
>
> Dennis
>
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
> Don Hanson
> Sent: Monday, July 22, 2013 12:48 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: Fuel pump noise?
>
> On the subject of fuel pumps, filters, noisy operation, etc.
>
> Here's a handy hint. Golf Tees are good fuel line stoppers for when you
> must work around the fuel system. I keep some in my tool box and just push
> one into any line that I have to temporarily disconnect.
>
> I installed a large pre-pump filter into my system. It came from a
> Triumph motorcycle and is actually larger than the standard VW post pump
> filter.. I see no reason to chance getting dirt from the tank or various
> filling stations into my fuel pump, so the pre-pump filter makes sense to
> me...thought the one VW uses on some models, that seems too small. Find
> and
> install a larger one, keep your FP happy.. Can't hurt.
>
>
> On Mon, Jul 22, 2013 at 9:07 AM, neil n <musomuso@gmail.com> wrote:
>
> > Was the noise always there or did it recently appear?
> >
> > I've been living with an intermittent pump noise for some time now.
> > Pump, tank, etc. were new at time of tank install and engine swap, and
> > the noise was apparent soon after that. Deleting the pre pump filter
> > and installing a post pump filter did not seem to change this. I'm
> > running the older style tank with smaller outlet.
> >
> > Not saying your pump won't fail, but if it were me, I'd just keep an
> > ear on it and note if there's an abrupt change in noise levels.
> >
> > Neil.
> >
> > On Mon, Jul 22, 2013 at 4:08 AM, Bob Anderson
> > <ROBERTANDERSON294@comcast.net> wrote:
> >
> > > Hello All,
> > > Question regarding my fuel pump. When engine is running, I'm
> > > getting a
> > continuous noise from the pump, like a noisy dremel.
> > > When I turn on the key, I hear the normal pump sound, but then once
> > > I
> > start the engine the noisy dremel sound starts and is continuous.
> > > Time for a new pump?
> > > Thanks,
> > > Bob Anderson
> > > '86 Vanagon
> > > Wilmington, MA
> >
> >
> >
> > --
> > Neil n
> >
> > Blog: tubaneil.blogspot.ca
> >
> > '88 Westy http://tinyurl.com/c8rlw6p
> >
> > '81 VanaJetta 2.0 "Jaco" http://tubaneil.googlepages.com/
> >
> > Vanagon VAG Gas inline-VR Engine Swap Group:
> >
> > http://tinyurl.com/d7gd5ej
> >
>
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