When you bleed radiators, you need to do a couple of things. Make sure the pump is off, or you may just change locations of some of the air. Then you need to continuously bleed all the radiators by going back over some of the ones you've already bleed. Once done, make sure to refill the system to between 12 and 15 psi depending on the number of stories in your home.
Good Luck
Raymond VinZant