[Diy_efi] Re: VW Surge / Expansion Tank Line Routing

[-]

Hi,
on audi and vw early injection systems (k-jet and it's successors) there 
used to be:
- a pump
- a filter
- a pressure reservoir
these somewhere under the rear seats, outside the car. later the pump 
got into the tank.

sometimes the filter is housed in the reservoir, making one unit
but
that pressure reservoir is pretty much _useless_
I wouldn't bother installing it
it often gets removed anyway, when messing around with them
give me the part number as long as it's a VW part number, preferrably 
also the model/make/year combination and I can look it up
latter is enough and preferred, btw...
but, again, if you have the pump and filter in place, don't bother 
adding that reservoir IMHO, won't help anything
even Audi was confused about installing it or not, some models with same 
injection sys have it, some not...
if you have lack of fuel pressure, go for a bigger pump =]

tom

ps. a bigger pic is appreciated if no P/N or make/model

>Message: 3
>Date: Tue, 19 Oct 2004 18:05:12 -0500
>From: <clair.davis at charter.net>
>Subject: [Diy_efi] VW Surge / Expansion Tank Line Routing
>To: "diy_efi" <diy_efi at diy-efi.org>
>Message-ID: <001f01c4b630$172c9660$b064a942 at davis>
>Content-Type: text/plain;	charset="Windows-1252"
>
>I just got my hands on one of the little VW fuel accumulator or surge tank
>things found in late-80's to early-90's Rabbits, Sciroccos, Foxes, etc.
>Here's an image:
>
>http://69.0.158.19/live/thumb/E100020955OES.JPG
>
>After a little research, it appears that this is actually the fuel filter,
>which agrees with a previous thread on this topic.  It APPEARS that the
>"filter" is your typical fine nylon mesh that basically separates the tank
>in to two separate areas.  My guess is that one area is fed by a supply pump
>(low pressure) and also by the bypass/return from the pressure regulator.
>There is also what I assume to be a tank return line on top of the filter
>body connected to this area.  The other area has what I assume to be an
>outlet, which is larger than the other 3 inlet/return lines.
>
>My question: is this in fact how this thing is hooked up?  Does anyone have
>a fuel line routing diagram for this little jewel?  Although it's pretty
>small, I think this will probably satisfy my needs for a surge tank while
>autoXing my Valiant.  If not, at least all my lines will be run and I can
>just reconfigure to add volume.  The extra filter feature is just gravy,
>since I'll have 2 in the system already.  Thoughts?
>
>Clair Davis
>69 Plymouth Valiant 7730
>Fort Worth, TX
>  
>


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