Cant bleed brakes

[HEI451]

The above post is why I always leave the master off its mount, tilted with the push rod aimed upwards at about a 40 degree angle, and bleed the master, on the vehicle. When the master is tilted this way, front end down, rear end up, the bleed port(s) in each chamber are at their highest, and since air rises in a liquid, gently pushing the push rod and piston(s) into the master, bleeds the air out of the master, allowing the pressure buildup to occur to bleed the rest of the system.

A note on "bleeding" Dot 5 brake fluids. Dot 5 HOLDS air bubbles somewhat well over the other 'Dot' brake fluids. When we tried to bleed the systems we used the Dot 5 in, we got mediocre results to no brakes at all. We found that when the fluid was pressurized in the master, it caught and held air bubbles, and they stayed in suspension for hours in the rest of the system. We found that simply pouring the fluid into the master, very slowly, so NOT to agitate it and capture any air, the fluid stayed fluid, and not aerated. We then simply opened the caliper bleed, and let the system gravity bleed into a CLEAN, clear canister and hose. This worked the best of any bleed tech on the Dot 5 brake fluids, every other method just didn't work.