Let it Bleed. OK, I have a W124 '93 300E 3.2L. Project is to replace the rear wheel set of brake pads and well worn dics. Mistake I made, discovered after I replaced the pads, was that I completely removed the caliper and split the 2 sides (opened) to access the old pads for removal. Should have knocked out the 2 guide pins and removed pads, which would not have allowed air into the lines. I thought the air would be easy to bleed out, which I've easily done before on countless makes and models. Problem is while using the brake pedal to bleed the brakes per standard procedure (rears calipers only) very little air and fluid is coming out of the brake bleed screw, sometimes nothing at all. The brake pedal just mushes down to the floor without any firmness building up. I removed one of the rear wheels to observe the caliper/brake pads while brake pedal actuated, but the caliper pistons did move. Next plan is to bleed the front calipers, thinking air traveled to the front brake lines. Any advice would be very much appreciated. Thanks! Mike