Steve:
You just diagnosed the problem correctly.
If there is no fluid loss, and the pedal will not hold pressure, then
the only problem can be internal bypass within the brake master.
Kelvin Dodd
> -----Original Message-----
> From: owner-mgs@autox.team.net [mailto:owner-mgs@autox.team.net] On
Behalf
> Of Steve Shoyer
> Sent: Monday, April 04, 2005 8:10 AM
> To: mgs@autox.team.net
> Subject: Brake diagnosis help needed
>
> My brake pedal will slowly sink to the floor with constant pressure.
The
> car is a 1980 MGB. The reservior is full of fluid and doesn't appear
to
> be leaking or losing fluid, the brakes have been bled repeatedly, and
many
> of the components have been replaced or adjusted. I'm guessing that
the
> brake master cylinder needs to be replaced (so nice of Moss to have
them
> on sale now!), but is there a way to verify that this is the problem?
>
> Thanks.
>
> --Steve Shoyer (1980 MGB)
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