I tryed the search but no find. All right its been sometime I got to work on my car because well alot of stuff been going on. So we need to fix the brakes because some of them are ceased. So the pass rear side needed a rebuild. So we rebuild it and it works now and the hole rear. So we moved to the front to uncease them. the driver side works with no air in the lines but on the pass side there allways seem to be alot of air in the lines. So we put about 600ml of brake fluid in and out the brake line. The pedal goes to the floor every time but if i keep pumping and pumping it will not then if i stop for about 10 sec it will go back to the floor. So can it be the master cylinder be no good? If you know plz help.

 

Sounds like you've got fluid leaking past the seals in the master cylinder.

If you hold the pedal down lightly, and it slowly sinks to the floor, and there is no fluid being lost anywhere, then you have found your culprit.

 

damn i hope not i am trying to get the car out side soon before winter so my dad can get his van and truck in to do the body work and drive around the block.

i am going to look tomarrow. i have a nother master cylinder from a parts car how can i look or test to see if that one is good?

 

I don't know of any test that would tell if it was good or not. If it has been out of use for a long time, or out of fluid, then the seals may be shot on that one too. I think I paid about 40 bucks for my MC at rockauto. Good luck...

 

Brakes are not something you should try to shortcut on. If they don't work, all the rest of your investment can be lost in a flash.

As Ken said, rebuilt cylinders are cheap and easily available, and installation is a couple hours work (bench bleed, first!). Worth their weight in gold if they avoid a brake failure.

 

My mastercylinder leaked into the booster, so it was a bitch to find the leak! On my old rx7

 

BTW if its leaking into the booster, that will fail next. Ask me how I know

 

it if had money i would get a new MC but we are low on cash because my mom got a 4 bypass lost month and she is not working and i am trying to get pass school right now. but i am going to try that other MC to see if it works. if not then i will have to start selling some crap around my house that i dont need to buy stuff.

 

I try your spare,

Did you bleed the master cylinder first? Then bleed the indiividual calipers?

 

not the master because thats been on the car for ever. but we did bleed ever caliper and the problem started when we hit the front pass. the rear and front driver side works but only on the pass front we get air.

 

Rumor is, it turned out to be a bad MC. He put his spare on, and now is rolling once again.

 

yep. it was. now i can stop. hoping soon to take it around the block. oh if you remember my glowing cat thread my cat was cloged but i fixed that with a good stick.