I like the idea of a pre pump filter too BUT...

The one time I've had a fuel pump failure (20+ years of Vanagons) I was
compelled to disassemble the old fuel pump just to see its guts.

What I discovered was a relatively large piece of fibrous material lodged in
the pump thus preventing it from turning.  Considering I hadn't opened the
fuel system in the previous 5K miles, I had to assume it was either a piece
of foreign matter that had somehow penetrated the pre filter screening
(unlikely but possible) or that a piece of the square pre filter screening
had come loose (a stretch but what else?).

I changed the square pre filter when I installed the new pump and later cut
the filter open to inspect both sides of the filter screening.  The inlet
side had some small gritty residue but the outlet side was clean.
Strange... (cue Twilight Zone music)

I wish I'd tried back flushing the old fuel pump before I had essential
destroyed it when I disassembled it.  Next time...

Andrew
Bainbridge Island WA

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
neil n
Sent: Thursday, March 25, 2010 11:19 AM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: 1.9L Fuel Filters

On 3/23/10, Jeff Lincoln <magikvw@gmail.com> wrote:
> Ok, so I've seen this discussed ehre before - however I wasn't having any
> luck finding exactly what I wanted int he archives.
>
> On the 1.9L engines the fuel filter was the small square plastic filter
> located between the fuel tank outlet and the fuel pump - however on the
2.1
> engines the fuel filter is the round canister type located after the fuel
> pump.
>
> To me both of these locations make sense - so tell me is there any benefit
> to keeping the plastic filter in it's stock location and also adding the
> canister type filter after the fuel pump?
>
> --
>

Re: some comments in this thread.

I installed the can filter post pump, and removed pre pump filter. (my
'81 only had square pre filter)

In my picasaweb pics (musomuso@gmail daht com) there are pics of the
retrofit.

The "step up" molded hose between pump and fuel tank shown. Not sure
if less $ than VC's offering.

An aside, but no difference in pump noise achieved by doing this. This
was the original intent. But... pics should help those with only the
square filter.

Frank C says the pre pump filter is a good thing IIRC.

Neil.

--
Neil Nicholson '81 VanaJetta 2.0 "Jaco"

http://tubaneil.googlepages.com/

http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engine
s