Ok so on Friday i replaced all 4 calipers because 2 of the 4 were seizing so i said might aswell do them all before the other 2 sieze. So everything was good placed the 4 new ones on and began to bleed them. Everything went well pedal was firm when i was backing up. As soon as i start to go over 20 kmh and try to stop the pedal just goes straight to the floor before it stops. So figured okay air in lines we can bleed them again. So we bled them again today and made sure to get all the air out. It feels better now but still the pedal is terrible! Like when i push it down a touch i can feel the car stopping but then it goes away and the pedal just sinks till it starts to stop again. Its full on fluid, we never let the master cylinder go dry, we started from lr,rr,lf,rf and still i have a ****ty pedal. We were thinking of bleeding the master cylinder but we couldnt find the bleeder valve. Any thoughts guys?

 

The master cylinder may be failing man that's the last thing I can think of unless you have a blockage in the lines

 

One of the lines might also have a very slight puncture to it, allowing air to get in

 

Well it cant be the MC, it was working perfectly before i changed the calipers, and if a line was punctured then fluid would be spilling right? The Fluid level hasnt changed in the MC so i know its not leaking anywhere.

 

Take and push brake fluid through bleeder on calipers up to master cyl r/rear l/rear p/front and dr front this should push all air out through the master cyl leave top off when u do,always worked for me,even on the most stubborn air pockets.

 

Fixed this problem a long time ago haha ! My Friend who did the back 2 calipers put them on backwards, therefore there was always air in the system. Flipped them around and re bled them and everything was back to new!

 

So its all good now Eh?

 

Yep! Everything is working as it should! Ive replaced alot since then

 

Kewl, Glad you got it repaired!