Brake pedal sinking to ground ???

[GTi E30]

Hi guys...
I had a rear caliper replaced on my mk5 golf ever since my brake pedal sinks to the floor every time I brake ???
Iv had all 4 calipers bled a good couple of times but the problem is still there 
Any idea what it could be ???
Cheers...

[rich83]

Sounds like there is air still in there. Have you checked that your not loosing brake fluid?

[GTi E30]

Nah not checked if fluid is leaking... I'll check tomorrow it was fully topped up today after we bled it so il check for any leakage tomorrow

[GTi E30]

Checked the brake fluid thats still full....

[DaveB@Vagbremtechnic]

Hi Pal

It's air.

best bet got to a dealer with a fixed price brake fluid change service and let it be their problem.

Be about £60 normally.

Alternatively remove the caliper from the carrier after tapping it a few times with a rubber mallet and then elevate it in the wheel well with the bleed nipple as high as you can get it and rebleed.

Don't forget to put a wooden block in the caliper if you are up/downing hence you pop the piston our

The VW machine pumps in at a higher pressure at than it sucks it out causing a positive pressure in the system, they also have a device that holds the brake pedal half way down, which avoids problems when pressure bleeding

[Andy]

mine did the same when i put rear r32 calipers on,bled mine 4 times until it was right--as mentioned it has air still in the system

[GTi E30]

Thanks guys   

Iv got it booked in at a different garage tomorrow this guy is sh*t hot lol lets hoe he can sort it if not then dealers can do it
Thanks...