First, I used the search engine, but I still have a question. My intent was to change the rear pads last weekend, and check the front brakes next weekend. The driver side went very smoothly. Every thing came off easy. Every thing went on easily.(only changing pads) The piston retracked with no problems. When I got to the passenger side the piston would not retrack. I did not use the bleeder screw. I opened the master cylinder cap. This has worked on my Nissan. How can I tell it the caliper is really stuck? Do I have to use the bleeder screw? I have never bled brakes before, so it makes me nervous. I was considreing purchasing the BMP pressure bleeder before I continue. If the caliper is really stuck is this something that can be fixed, or do i need to buy another caliper.