craigwhite89gt

here is what ive been goin thru
https://mustangforums.com/m_2623614/tm.htm

Soi got a 93 MC and 3-2 kit.

Well I say still might have problem cuz i ran out of fluidand still have no pedal pressure. But is it normal for the pedal to not retain any kind pressure. even when the lines might just have a little air>? Also while pumping the brakes /after im done pumping air bubbles up into the resivoir ... normal?? Brake booster going bad would not have anything to do with my problems would it..

mattdel

sounds like an air leak at the highest point in the system to me

tmajikman

Did you bench bleed the master cylinder before you installed it?

AdderMk2

+1
probably not

craigwhite89gt

yes i did

tmajikman

I had a friend that bought a brand new master cylinder and it was bad, it may be worth taking it back and getting another one.

tmajikman

Have you tried to use brake fluid to clean all your fittings, to see about leaks, maybe you have a clogged line, has the fluid ever been replaced?

craigwhite89gt

All I am getting is bran new fluid out the bleeder.

tmajikman

I would still think about exchanging the new mast cylinder,bad partshappens man.

craigwhite89gt

yea i jus find it hard to belive that a NEW not rebuilt 93 Cobra Cyl is bad... Ill find out tommarow for sure when i get more brake fluid