help with brakes
 

I just replaced my master cylinder for my brakes...i bleeed the cylinder and all 4 brakes but my pedal is still low? What should i do? re bleed them or....idk

Re: help with brakes
 

when you were bleeding them, did the pedal get hard ?

Re: help with brakes
 

not really

Re: help with brakes
 

you didnt do this by yourself, did you ?? get someone in the car to pump the brake while you bleed them. make sure the pedal is hard, I usually pump it ~20 times on each wheel. Do it again and tell me how it is.

Re: help with brakes
 

you need to bleed the master cylinder ITSELF before u put it on.
Use rubber lines to route all the in/outlet of the MC back into the resvior, fill it up with brake fluid then hand pump the piston until all the bubbles came out. Then put it back on , connect all the lines and bleed all 4 wheels.

Re: help with brakes
 

i had my dad pump the brakes while i bleeded them through the bleed nut and i stoped when there were no more air bubbles in the clean hose i hooked up to the bleed nut.....i dont remember if he had the brake up or not...would that make a difference?

Re: help with brakes
 

i mean i didnt know if he took the hand brake off or not

Re: help with brakes
 

You don't get it, you need to bench bleed the master cylinder. This means taking it off of your car and putting it in a vice.

You use some fittings that screw into where the brake lines would go into the master cylinder, and connect the lines back into the reservoir. Then you basically push on the cylinder with whatever you have laying around that works (screwdriver, extension, etc.) until the bubbles stop.

Re: help with brakes
 

when i did my drum/disc conversion i only bleed the four weels not the MC. this is how you do it. let your dad pump the pedal until it gets hard, make sure he has the brake pedal pushed in, then loosen the nipple(or whatever its called)then tight it. do that a few times 3 or 4 on each wheel. handle brake has nothing to do with it.

Re: help with brakes
 

You got lucky. Any time you swap out a master cylinder you should bench bleed it.