Re: Brake bleeding HELP Reply #15 – April 10, 2013, 11:01:22 pm If you are pumping fluid through the system but not getting any "feel" on the brake handle, you still have air trapped in the system somewhere. Brake fluid is (for the sake of this discussion) incompressible. When you "squeeze" it inside the master cylinder the pressure moves down the line and applies that same (or nearly) pressure to the brake pad. Air, however, is compressible. If you have a small pocket of air in the line, master cylinder, splitter, or banjo bolt assembly (all typical hiding places) the brake handle must first compress that air until the pressure is equal that of the line pressure needed. However, the master cylinder volume is fixed and if enough air is present, the master cylinder will run out of "throw" before it compresses the air enough for you to "feel" it.... If you have no feeling at all but are pumping brake fluid, you still have air trapped in the system somewhere. I have gone through an entire quart of brake fluid before trying to get the air out of the master cylinder on one before. Sometimes, they can be a real pain..... Just keep at it and all of the sudden, for no apparent reason, it'll clear up and start working great and you'll have it, then.