If it releases when you release the bleeder, that tells me the brake caliper is releasing properly. Since we know that, I feel that the rubber brake hose that attaches to that caliper is bad. What happens is over time, they collapse inside. As a result, when you push the brake pedal, you can FORCE fluid through the hose to actuate the caliper. However, when you take your foot off the brake, the fluid can't return back and causes the caliper to stay tight.
So, since you can't spin the wheel until you open the brake caliper bleeder, I recommend replacing the rubber brake hose that attaches to the caliper.
Sunday, December 1st, 2013 AT 4:36 PM