That happens when the master cylinder is above the calipers. On my
car I couldn't get the brakes bled until I located the MS such that
it was above the calipers. Then the brakes bled themselves, like yours.
Skip
At 03:20 PM 7/9/2007, Dick J wrote:
>After fifty-plus years of playing with old cars, it would seem that
>I should have more answers than questions, but here goes, another
>stupid question.
>
> I decided that while the motor was out of my car (77 Pontiac
> Firebird), I'd detail the engine compartment, and replace both of
> the old, bent-up front brake lines. When I got ready to bleed the
> front brakes, I removed the bleeding nipples to clean them up a
> bit, and noticed bubbles streaming out of the caliper
> fitting. After a moment, the bubbles stopped and a solid flow of
> fluid started leaking out. I screwed the nipples back in and
> snugged them down. I checked the master cylinder, which had just
> been filled, and the front bowl was about half empty. I topped it
> off, got into the car to feel the pedal, and the brakes were
> fine. The system had "bled itself" ? ? ?
>
> I've done that with hydraulic front disc brakes on motorcycles
> before, helping along by tapping on the brake line, but I've never
> had it happen with a car.
>
> Any comments??
>
> DickJ
> In East Texas
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