I recently had a basic service done at the LBS and since then I have lost all pressure in the rear brake. I am able to pump the lever to get some braking pressure, but the moment I release the break the pressure dissapears and I have almost no rear brake.
I took the bike back to LBS for a brake bleed, nothing changed, then back again, still no change.
The LBS say there is nothing else they can suggest or do other than to send the brake back to Avid and ask them to fix it under warranty.
I cant help but feel they are a little unwilling to try and diagnose this further, especially after I have paid for a service and 2 brake bleeds.
Does it sound like there simply isnt enough fluid in the system, or a fault somewhere in the system?
I have taken the pads out and had a general play around.
Is it right that almost all of the brake compression comes from just one side of the caliper?? One side moves out loads, and the other stays almost flush to the housing?