Could it be air comming trough the rubber hoses. The advise is to change
them after some years. I have teflon/steel lines and never have to bleed.
Fred Schneider
> > My rear brake loses pressure over about a two week span. I can find no
> > apparent leaks in the system and the level in the rear master cylinder
does
> > not dimininsh over that period. I get a small amount of air upon
bleeding
> at
> > the rear caliper and this cures the problem for a couple fo weeks.
> Mine does this also but it takes longer to require bleeding again usually
> every couple months. I have had the HPU replaced under warranty to try and
> cure the problem and two shops could not figure out the problem so I just
> decided to live with it and flush out the system every couple months.
>
> Bob
>
