Brake bleeding

[GolfVR]

Hey all.  I have a mk3 VR6 and have been having big probs changing the rear calipers. The problem I have had is the new calipers will not bleed, i'm using a pressure bleeder and all i get is a big air bubble coming out every second(regular). However if i put the old caliper back on it bleeds no problem straight away. I have stripped them down and the seals look okay. The bleed nipple wobbles when it is undone half a turn. Could this be the problem?  i am now on my second set of these calipers (i sent the first set back). The calipers are brand new mk3 lucas calipers. I have done rear calipers several times before on other vws and never had problems before. Anyone?

[kevin]

nipple wobble ,, don't sound good, but two sets with the same prob.can't really answer your problem but you must have a leak somewhere m8,
my advice would be to check your lines again and possibly try your old calipers yet again!!
if i'm right if the nipple is wobbling your getting air back into the system somehow.
this type of prob.. can be a pain in the asre but you sound like you have a fair knowlege so take your time and check it again and you should get there eventually. Not the best answer i know, but i know what you mean!! the easy ones cause the biggest probs,
all the best m8
regards kevin  

[modulater]

Also Golf VR6 get your mate with the heavy feet to stamp on the peddle a few times as the adjuster is normally dodgy on new calipers if you know what I mean