brake problems

[sixty7rs]

hey guys I'm have problems with my 95 corolla, standard brake no abs.
there is no pressure, pedal drops to floor.. I've replace the master cylinders with 3 remans, and 1 new,bench bled every one, new booster, new calipers, new pads, new rubber lines, bled the brakes every possible sequence, and nothing. the problem started with lost of pressure. I'm running out of ideas and money,

[Rip The E Brake]

I am willing to bet, you have bad steel brake lines. You need to check them.

[ganda1f]

Are you losing brake fluid or just the pedal going all the way down?
I assume you have drums and not discs in the rear.
If your rear brake shoes are not adjusted properly, meaning they are far away from the drum, all the brake fluid will go into the rear wheel cylinders and the pedal will just drop to the floor without much or any resistance.
The brake shoes should be just about touching the drum when the brakes are released. When you spin the wheel you should actually hear the shoes dragging on the drum, but just a tiny bit. The wheel should spin about 1-2 revolutions before it stops.
Check your self-adjuster mechanism inside the drum. Chances are it is stuck. Clean it, lube it, adjust properly.

[speedy25]

If you used autozone for your MC parts then I can understand your trouble. I have not had a good one from them ever.

Pedal goes to floor for two reasons- Air in the lines and leaks. You should be able to find a leak fast even with air in the lines. but it might take a while to find the puddle.

Bleeding can be tedious at times. I recommend a vacuum pump like the mityvac. Its been well worth the $35 I paid years ago in time savings. Its sooo much easier sucking air and dirty fluid out than pumping it out a little at a time.

Keep at it. You'll get it fixed.

-SP

-SP