brake pedal gets slushy when held down

[isham-research.freeserve.co.uk at pop.pol.net.uk]

> When I keep the brake pedal depressed for 30 seconds
> or so, it starts to give and slip towards the floor.
> Letting it back up and pumpimg it once alleviates the
> problem. is this the pump or air in the line or
> something else? 86 coupe gt.

Master cylinder.  You are not very far away from complete brake
failure.

--
 Phil Payne
 UK Audi quattro Owners Club
 Phone +44 7785 302803   Fax: +44 7785 309674