I have just changed a rear brake caliper on my Golf GTI Turbo, and now i have no pedal. Have bled the brakes front and rear twice and the pedal is going straight to the floor, but only when motor is running. If motor is off then the pedal feels normal. Just wondered if anyone had any ideas before i start looking at servo/master cylinder. Cheers.

 

bleed the master cylinder first

 

tryied that still the same

 

are you doing the two bleed nipples on the master cylinder my mate got a mk4 golf gti turbo and it a pain in the ass to bleed