I agree with Bobb, it sounds like the compensating port is blocked. If anyone has messed
with the master cylinder they often put the front stop washer in back wards, the result
is that the rod and piston can't return far enough to clear the port. Same symptoms as a
plugged port, in other words over 15 to 30 minute period they will bleed down so you can
drive it again until you apply the brakes again.
Denny Graham
Sandwich, IL
Last edited by Denny Graham; 10/03/2011 12:13 AM.