Bleeding Magura Brakes

[Andy in Germany]

Currently trying to bleed a set of elderly Magura HS11 Brakes with little success.

So far I've fitted the various syringes and tubes as per this video:



After some mucking about because "universal" bleed kits apparently mean "universally lacking parts" I managed to get a syringe on the top and bottom brakes as per video, up until timestamp 1:50 above.

In contrast to the video, I can't press the syringe. I've checked and the syringes are both connected to the same (front) brake, and all the tubes from the bleed kits are clear.

The top empty syringe can't be pulled back, suggesting a vacuum or blockage

Is there some other point that has to be unscrewed/unblocked to allow the oil to run up the tube?

 

[Richard A Thackeray]

They look like an updated version of the Maguras that were on my Pace RC100

Those were so easy to bleed

 

[Andy in Germany]

I think there was something wrong with those particular brakes: in the end we threw them out and replaced them with V-Brakes.