[PbFut]

If you are getting pressurized fluid at the brake line to caliper connection, but nothing at the bleeder, then the blockage must be in the caliper. I would bleed as best you can at the brake line connection to eliminate as much air as possible. Connect caliper and bleed the caliper. If it will not bleed than the previous comment may be correct that the piston is too deep and blocking any incoming fluid.