[Vwdiesel] squishy brakes?

[Tad]

This is probably just me, but it seems like I always imagine that the pedal
is sinking when it isn't really. :)

On my TDI I can use up all the vacuum if I pump the pedal rapidly...

On Tue, Aug 3, 2010 at 4:13 PM, mark shepherd <mark at shepher.fsnet.co.uk>wrote:

> It is a little ambiguous, but I latched onto the rapid pumping using up the
> vac, and this resulting in a firm, but hard to actuate pedal. A bit like
> repeated pumping with engine off IMO.
>
> Mark
> ...Bill where's that Quantum ;o)
>
>
> ----- Original Message -----
> From: "Patrick Dolan" <pmdolan at sasktel.net>
> To: "mark shepherd" <mark at shepher.fsnet.co.uk>
> Cc: "vw fans" <Vwdiesel at vwfans.com>
> Sent: Tuesday, August 03, 2010 9:21 PM
> Subject: Re: [Vwdiesel] squishy brakes?
>
>
> >
> > We don't have enough information.  If the pedal is going down as vacuum
> > dies off (possible) but not all of the way to the floor, it would be as
> > you suggest.  If it keeps on going, hydraulic.   Also possibility of both
> > systems in trouble.
> >
> > ----- Original Message -----
> > From: mark shepherd <mark at shepher.fsnet.co.uk>
> > Date: Tuesday, August 3, 2010 1:38 pm
> > Subject: Re: [Vwdiesel] squishy brakes?
> >
> >> Slow sinking does signify a slight leak, but the running out of
> >> pedal power,
> >> is a sign that the vaccuum pump is not replenishing vaccuum fast
> >> enough. On
> >> the Mk2  setup that could be either low oil in sump , or faulty
> >> [chipped or
> >> sticky] vanes  in the pump. Attach a vac gauge in 'boost/servo' line.
> >>
> >> Mark
> >>
> >>
> >> ----- Original Message -----
> >> From: "Will Taygan" <william at taygan.com>
> >> To: <vwdiesel at vwfans.com>
> >> Sent: Tuesday, August 03, 2010 7:00 PM
> >> Subject: [Vwdiesel] squishy brakes?
> >>
> >>
> >> >
> >> > I'm wondering if I have a vacuum leak?  94' 1.6TD FrankenJetta
> >> > (originally gas).  Pedal sinks if pushed slowly.  Works great if
> >> pushed> quickly.  Lots of pumping leads to a nice hard pedal but
> >> with very very
> >> > little braking power.
> >> >
> >> > Bled rear brakes, no effect (although the right parking brake
> >> cable was
> >> > stuck on - I've got new cables on order, although i suppose it
> >> *could*> be that rebuilt caliper I put on last year)  Front brake
> >> bleeders are
> >> > stuck/rounded.  Power lock vacuum is working fine.  Couldn't
> >> find any
> >> > obvious leaks between the vac pump and the brake booster.  I put
> >> some> RTV silicone around the grommet at the brake booster, just
> >> in case that
> >> > might help.
> >> >
> >> > Ideas?
> >> >
> >> > Thanks,
> >> >
> >> > Will in Alaska.
> >> >
> >> > P.S. I'm thinking about just pulling this engine and putting it
> >> in the
> >> > '82 diesel Westy, but I gotta figure out how much work that
> >> actually is
> >> > first..  Winter is coming!
> >> >
> >> > _______________________________________________
> >> > Vwdiesel mailing list
> >> > Vwdiesel at vwfans.com
> >> > http://www.audifans.com/mailman/listinfo/vwdiesel
> >> >
> >>
> >>
> >>
> >> _______________________________________________
> >> Vwdiesel mailing list
> >> Vwdiesel at vwfans.com
> >> http://www.audifans.com/mailman/listinfo/vwdiesel
> >>
> >
> > _______________________________________________
> > Vwdiesel mailing list
> > Vwdiesel at vwfans.com
> > http://www.audifans.com/mailman/listinfo/vwdiesel
> >
>
>
>
> _______________________________________________
> Vwdiesel mailing list
> Vwdiesel at vwfans.com
> http://www.audifans.com/mailman/listinfo/vwdiesel
>