[Vwdiesel] squishy brakes?

[Patrick Dolan]

It is very simple:  pedal sinking has nothing to do with vacuum, that is a 100% Hydraulic problem.

Two possibilities:  brake fluid is leaking out (leaking line, wheel cylinder, etc.) in which case the brake fluid level will be going down.   Second:  brake fluid is leaking past the piston seals in the master cylinder (thus brake fluid will NOT go down).  Find the leak if the first and fix it, or rebuild/replace the m/c if the second.


----- Original Message -----
From: Will Taygan <william at taygan.com>
Date: Tuesday, August 3, 2010 12:00 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 
> pushedquickly.  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 
> thatmight 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!
> 
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