[urq] Spongy Brake Pedal

[Mike Sylvester]

The lack of brake assist caused by a bad bomb, would give you a hard
ineffective pedal not a spongy pedal.
A spongy pedal indicates either a leak or air in the system.  Since the
pedal eventually gets hard, it sounds like air.
Once the air is compressed, the pedal feels OK.

Mike Sylvester

> -----Original Message-----
> From: Ingo Rautenberg [mailto:i.rautenberg at waratap.com]
> Sent: Tuesday, January 25, 2005 10:35 AM
> To: Pasqualoni, James E; Urq List
> Subject: Re: [urq] Spongy Brake Pedal


Bomb?
----- Original Message ----- 
From: "Pasqualoni, James E" <james.pasqualoni at gs.com>
To: "Urq List" <urq at audifans.com>
Sent: Tuesday, January 25, 2005 9:21 AM
Subject: [urq] Spongy Brake Pedal


> Guys,
>
> I am having trouble correcting a spongy brake pedal that does finally does
> finally firm up and grab, albeit close to the floor.  The calipers,
rotors,
> pads, hoses and lines have been replaced.  I am using ATE Blue fluid, and
> the master cylinder and lines have been bled twice.  Rear calipers have
been
> adjusted with the foot on pedal/ratcheting ebrake method.  The pedal gains
> significant resistance after this adjustment, but when the car is driven,
> the pedal becomes spongy again.  My first thoughts were master cylinder,
but
> my understanding is that the pedal would not become firm before hitting
the
> floor if this was the case.
>
> Any BTDT please?
>
> TIA,
> Jim
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