I had a lot of trouble with spongy brakes last year but eventually resolved them.
![](./images/smilies/spacer.gif)
I checked the rear pads at one side before I changed the calipers
![](./images/smilies/spacer.gif)
& they were perfect.
![](./images/smilies/spacer.gif)
I assumed the other side were fine
![](./images/smilies/spacer.gif)
& left them in place when doing the calipers at that side.
![](./images/smilies/spacer.gif)
Turned out that the old calipers on one side had been binding
![](./images/smilies/spacer.gif)
& the pads had been roasted
![](./images/smilies/spacer.gif)
& gone off.
![](./images/smilies/spacer.gif)
Changing the rear pads helped sort the problem.
![](./images/smilies/spacer.gif)
I would put new pads all round
![](./images/smilies/spacer.gif)
- they're cheap
![](./images/smilies/spacer.gif)
A few things I did.
![](./images/smilies/spacer.gif)
Not sure if they are of any use but here goes:
![](./images/smilies/spacer.gif)
1.
![](./images/smilies/spacer.gif)
Disconnect the handbrake at the calipers.
![](./images/smilies/spacer.gif)
Screw pistons all the way in
![](./images/smilies/spacer.gif)
& back out 180 degrees to line up with notch on pad.
![](./images/smilies/spacer.gif)
2.
![](./images/smilies/spacer.gif)
Started engine
![](./images/smilies/spacer.gif)
& left running
![](./images/smilies/spacer.gif)
( a mechanic told me this helps)
3.
![](./images/smilies/spacer.gif)
Bled from furthest away first( rear passenger,the rear drivers side, then front passenger
![](./images/smilies/spacer.gif)
& finally front drivers)
4.
![](./images/smilies/spacer.gif)
Reconnect handbrake
![](./images/smilies/spacer.gif)
& adjust
![](./images/smilies/spacer.gif)
It took a while but worked for me
![](./images/smilies/spacer.gif)
Tim