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Date:   Fri, 26 Apr 2013 13:56:54 -0400
Reply-To:   Craig Cowan <phishman068@GMAIL.COM>
Sender:   Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:   Craig Cowan <phishman068@GMAIL.COM>
Subject:   Re: Brake pedal goes to the floor
Comments:   To: "mcneely4@COX.NET" <mcneely4@cox.net>
In-Reply-To:   <20130426135217.6R9XB.117220.imail@eastrmwml304>
Content-Type:   text/plain; charset=ISO-8859-1

I stupidly installed good used parts in this case.... : /

-Craig

On Fri, Apr 26, 2013 at 1:52 PM, <mcneely4@cox.net> wrote:

> Craig, your master cylinder is exhibiting "bypass." The piston is worn or > the cylinder itself is worn, and allows fluid to bypass the piston. The > pump-up phenomenon is characteristic, as the parts expand a bit with > frictional heating, or so I have been told. At any rate, the symptom is > classic. > > The part should be warranted by the seller. A bad new part is not unheard > of. > > mcneely > > ---- Craig Cowan <phishman068@GMAIL.COM> wrote: > > Hey gang. > > Last summer I had a problem with my master cylinder in my syncro, or so I > > thought. The pedal would "Sometimes" go all the way to the floor but > could > > pump up to build pressure. Other times it would work fine. > > Anyway, I replaced the master cylinder, bled the system and all was well. > > > > Well now about 1000 miles later, i've got the same symptoms occurring. > The > > fluid level has not gone down, so I don't have a leak. It feels as though > > something has blown out and is allowing a piston somewhere in the system > to > > move freely. I'm thinking it's the master again, but it sure is weird to > > kill two as quickly as I have. > > > > Any thoughts? > > When the pedal works, it's firm and functional. But sometimes I get a > firm > > pedal, and while keeping my foot on the pedal it slowly moves towards the > > floor. > > > > -Craig Cowan > > -- > David McNeely >


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