If the master was drained of fluids when the rear brake cylinders were removed, you need to bench lbleed the master cylinder first. If the master cylinder is not in good condition, it can fail when bleeding is performed.
Bleed the master cylinder by cracking the joints on it.
December, 15, 2010 AT 7:17 PM
I FOUND THE PROBLEM I CHECK THE MASTER CYLINDER AND THERE IT WAS THE PROBLEM THE BUSHINGS INSIDE ARE BROKEN I INSTALL A REMANUFATURE MASTER CYLINDER AND IT WORK JUST LIKE NEW FOR ONLY 36 DLS WITH EXCHANGE
THANKS FOR YOU TIME GOD BLEST YOU AND YOU LOVE ONES