Fuel pump queston

[brian_wagner@sbcglobal.net (Brian Wagner)]

Could be 3 things

1) Accumulator
2) Check valve at pump
3) Fuel Distributor return which is pressure regulated also

Need to get a CIS pressure kit and test line pressure.
----- Original Message -----
From: "Rabbit16v" <Rabbit16v@attbi.com>
To: "Scirocco List" <scirocco-l@scirocco.org>
Sent: Thursday, December 12, 2002 11:15 PM
Subject: Re: Fuel pump queston


> Isn't this an accumulator problem?  I thought the accumulator maintained
> system pressure so that the car wouldn't have to start up from air the
next
> time it was started.  Maybe I'm thinking of something else (a valve or
> something), can't remember everything!
>
> Dave
> ----- Original Message -----
> From: "Chris DeLong" <green536@hotmail.com>
> To: <losinit@usa.net>; <scirocco-l@scirocco.org>
> Sent: Thursday, December 12, 2002 4:37 PM
> Subject: Re: Fuel pump queston
>
>
> > The prepump does not put out enough pressure/volume to run the car.
> However
> > main pumps can still buzz and not pump fuel. I have seen this happen
> before.
> >
> >
> >
> > Chris DeLong
> > ICQ#45030867
> > Seattle, WA USA
> > '80 16V 'Rocco ragtop
> > '91 GLi 2.0 16V
> > '77 Rabbit 16V
> > '80 'Vert (parting out!)
> > '61 17 Window type II
> > '91 Vanagon
> > '78 Rabbit
> > '84 Jetta
> >
> >
> >
> >
> >
> > >From: Cathy Boyko <losinit@usa.net>
> > >To: "Scirocco  List" <scirocco-l@scirocco.org>
> > >Subject: Fuel pump queston
> > >Date: Thu, 12 Dec 2002 18:31:14 -0500
> > >
> > >OKay, a question. My car('87 16V) has been out to have a fuel prime
> problem
> > >cured.
> > >Anyway, the initial symptoms were no fuel at starting until the pump
ran
> > >through many cycles. Once there was fuel to it, it'd fire right up and
> run
> > >well, until next time it sat.
> > >So the Bentley suggested either a check valve or accumulator, and both
> were
> > >replaced, but the problem persisted.
> > >Other suggestions were the transfer pump (it's making good pressure
> > >apparently, the car's still not home) and the reservoir, which is also
> > >apparently fine. A leaky injector was another possibility (not sure
about
> > >those).
> > >Anyway, he says the main pump is buzzing but not making any pressure
> (it's
> > >pretty old and corroded). Does this fit with the previous symptoms?
Would
> > >run
> > >reasonably well on just the transfer pump if the main one was going
> south?
> > >I
> > >did notice a slight variation, like a pulsing, when you'd drive at
> constant
> > >speed, say around 4000 rpm, but nothing too horrible, and it was
finally
> > >idling really well (thanks to a few nice listers).
> > >Anyway, feedback is appreciated before I add another new part to this
> car.
> > >Cathy, 1987 16V "the silver headache"
> > >
> > >
> > >_______________________________________________
> > >Scirocco-l mailing list
> > >Scirocco-l@scirocco.org
> > >http://neubayern.net/mailman/listinfo/scirocco-l
> >
> >
> > _________________________________________________________________
> > Help STOP SPAM with the new MSN 8 and get 2 months FREE*
> > http://join.msn.com/?page=features/junkmail
> >
> >
> > _______________________________________________
> > Scirocco-l mailing list
> > Scirocco-l@scirocco.org
> > http://neubayern.net/mailman/listinfo/scirocco-l
>
>
> _______________________________________________
> Scirocco-l mailing list
> Scirocco-l@scirocco.org
> http://neubayern.net/mailman/listinfo/scirocco-l