Brakes
Thread Starter
Intermediate
Joined: May 1999
Posts: 33
Likes: 0
From: blue springs mo usa
Brakes
I rebuilt the mastercylinder on my 78 and have bled the brakes 3 times, each time I get good pedal, then I drive it about 10 miles and the pedal goes to the floor and the brake light comes on, I can find no leaks and get a very small amount of air when bled. Where do I go from here?
Burning Brakes
Joined: May 2008
Posts: 1,116
Likes: 5
From: Middleburg Florida
I rebuilt the mastercylinder on my 78 and have bled the brakes 3 times, each time I get good pedal, then I drive it about 10 miles and the pedal goes to the floor and the brake light comes on, I can find no leaks and get a very small amount of air when bled. Where do I go from here?
Melting Slicks
Joined: Apr 2004
Posts: 2,008
Likes: 38
From: Space Coast Gator Territory
I always work solo and brake bleeding was always a PITA and a challenge. A while back I decided to solve that problem and made the one pictured from garage scraps. With my pressure regulator set 18-20 psi, I just crack open the bleeders in the correct sequence and job quickly done. Either you are not getting all the air out of the system, or you have a leak. Check your master for any loss of fluid. If your pedal goes to the floor, you have a leak somewhere.
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Last edited by Red 69; Jun 8, 2012 at 05:19 PM.
Race Director
Joined: Jul 2001
Posts: 15,892
Likes: 42
I rebuilt the mastercylinder on my 78 and have bled the brakes 3 times, each time I get good pedal, then I drive it about 10 miles and the pedal goes to the floor and the brake light comes on, I can find no leaks and get a very small amount of air when bled. Where do I go from here?
Have you changed or played with the rotors lately?
Safety Car
Joined: Sep 2007
Posts: 4,454
Likes: 328
From: Indy Indiana
I agree, which wheel are you getting air in? is it the same wheel every time? replace that caliper and replace that rotor, or rebuild that wheel's caliper with O-ring seals.
if it is on the rear ( usually is ) then you might have a rear bearing worn out or out of spec causing excessive runout. if you are lucky it is just runout from a overheated warped rotor. replace it...
if you pull your lip seal out from the caliper in question, i bet you will find your leak.
if it is on the rear ( usually is ) then you might have a rear bearing worn out or out of spec causing excessive runout. if you are lucky it is just runout from a overheated warped rotor. replace it...
if you pull your lip seal out from the caliper in question, i bet you will find your leak.
