I put new hei braklines on a 03 636. My front brkes an rear hand brake is fine, but the rear foot brake acts like it wants to grab, but not enough to amount to any thing. Ive bled the line with a vacum an there is no air bubbles at all coming out what can be the deal??

 

dirt in the line??

 

Im not an expert but i have seen people use vacuum bleeders and they still have to do some of it the old fashoned way.. first off is it a hb fitting or are you running dual calipers? id say there has to be air trapped in there. id pump it up and crack the banjo open a couple times then try the bleeder valve. but then again i could be wrong

 

bleed it at the master first then bleed it at the caliper and do it the old school way.