MkI fuel accumulator question

[fahrvergnugen at cox.net (fahrvergnugen@cox.net)]

IIRC, Robert Probst said in Bosch FI and Engine Management said that not only is it a pulse-stopper, it is a pressure retainer, for up to 20-30 minutes after shut-off.  Both of these issues are minimal in the big scheme of things, but...

David 


> From: <nocones77-vw@yahoo.com>
> Date: 2006/03/21 Tue PM 03:13:33 EST
> To: Allyn <amalventano1@tds.net>,  peter@thescirocco.com, 
> 	roccit_53@scirocco.cs.uoguelph.ca
> CC: scirocco-l@scirocco.org
> Subject: Re: MkI fuel accumulator question
> 
> Are you sure *all* injected VW's have an accumulator? 
> 
> Sometime last year, I removed mine on the advice of Abe Potter, who not only happens to be a long-time autocrosser of a Digifant-1 converted Scirocco (which is now owned by Kevin Wenzel, who drove it to win the 2005 FSP National Championship), but also a long-time VW certified tech and former VWoA employee. I also run Digi-1 myself. In my case, I only removed it because I wanted to mount the fuel filter in that location since there isn't a good place for it on the passenger side of the engine bay.
> 
> My understanding is that the accumulator was only for CIS cars, and was necessary to keep the pulse of the pump from disturbing the spray pattern of the "always-on" injectors. EFI injectors obviously aren't subject to this issue. Further, I was assured most whole-heartedly that the accumulator has nothing whatsoever to do with prevention of fuel starvation...it operates more like an electrical capacitor than an "Accusump for fuel."
> 
> Take that info for what it is worth...but I have had zero issues. In fact, if anyone needs an accumulator for their CIS car, I still have mine in fantastic shape that I just re-discovered in my parts pile last weekend. It is the kind *without* the hose on the opposite side of the can from the fuel fittings...
> 
> Neal
> 
> ----- Original Message ----
> From: Allyn <amalventano1@tds.net>
> To: peter@thescirocco.com; roccit_53@scirocco.cs.uoguelph.ca
> Cc: scirocco-l@scirocco.org
> Sent: Tuesday, March 21, 2006 12:13:01 PM
> Subject: RE: MkI fuel accumulator question
> 
> > All fuel injected VW's have a fuel accumulator, except for 
> > Allyn's car. ;) 
> 
> I typically won't remove or bypass it unless I am provoked (fuel pump line
> starts leaking, accumulator rusts so badly it falls off of car, etc).
> :)
> Actually, for Cincy 2k+2 I showed up without the accumulator - and since the
> reservoir had just cracked, I had it bypassed as well! Actually, that was the
> year Ron took me to the autox, and I remember being paranoid about not having a
> full enough tank to avoid fuel cut in the final right-hand sweeper at the end of
> the course. Turns out 1/4 tank was enough to handle it, though I believe I was
> subliminally holding back a bit on that turn.
> Heheh
> Al
> 
> 
> 
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