Ok to start my brakes were sticking and i replaced the MC and didnt bench bleed oops then dicided to replace front calipers 40 at napa so i go to put the pass side on and strip the damn threads oops so took it back to napa and they gave my a new one for free(WOW) so i get the new one put it on and now im ready to bleed brakes so i do the rr then lr then fr then fl so im done right HELL no my brake pedale is just going to the floor every time but if i pump them it works but if you sit their for 10 seconds or so it will just go right to the floor again and i have searched and came up with nothing and i just checked and thier is no leaks what should i do next THANKS GUYS

 

Have you checked that master cylinder? Maybe it was defective, I had the same problem and found mine was shot to hell. Or maybe its the brake booster.

 

Also, make sure you bleed the system really good...air bubbles can cause that too...

 

It was a brand new MC so i hope its not that and how do you know if its defective or not and i will try to bleed again thanks

 

bump

 

If you press the pedal right to the floor... this will push the master cylinder piston right to the end of the casing and therefore the little rubber seal on the end will pop backwards creating an internal leak.
When you bleed your brakes, you should NEVER press the pedal to the floor. Good practice is to put a peice of 2X4 under the pedal to prevent damage to the master cylinder.
You might be able to take it apart and flip it back the right way using the fsm (never seen anyone repair one after this has happened)... or you can return it and say its defective and get a new one.

Hope your bad luck has bled itself out.

 

****!!!!!! Thanks

 

^ That happend to me but then i replaced it and it works fine now. I now just press the pedal lightly till i get near the floor.

when i bleed brakes. I take a small bottle and put some brake fluid in it and take a hose from the bleeder valve and put it in the bottle with the fluid. now i can go in the car and pump the brake pedal to get the air out. This is easier and faster then having to 2 people doing it. Just keep in mind that the fluid in the resivour will drain quick. so keep topping it off.

 

^^^ ill try that man thanks guys looks like im going back to autozone AGAIN

 

I would also recommend buying a vacuum bleeder or making a pressure bleeder (yes, you can buy pressure bleeders, but for twice what it costs to make it yourself). Either of these methods are easier, can be done effectively by only one person, and help ensure a better bleed in my opinion.

This way you can also eliminate the possibility that the brakes just weren't properly bled.

 

Is their any thing else i could be ? (is thier anything else i can try before taking mc off)

 

i had a problem like you! and i forgot too bench bleed the MC.

 

I think its a matter of bleeding the brakes properly.

 

Thanks guys ill try to bleed again first then do the task of replacement

 

start with the closest brake to the master cyliner, then work your way to the furthest..

drivers side front
passenger side front
drivers side rear
passenger side rear

 

That's backwards. You start with the one that is the farthest.

There are two bleeders on each rear. Bleed the bottom one first.