abs/ need help

[ur_theking]

Hi all,
just joined and boy am i glad i found this place.
I really need HELP!!! (I have a 92 park ave) Can anyone tell me what would cause only one side of my brake to have good pressure (front left) while the other side (front right) has very little and the caliper wont work at all? I changed brake hose and blew out all lines, and still can't get pressure to the one side. I have vise versa on the back. No brake on left but brake on right. I know alot of you guys are smart at these things but I know absolutly nothing about this at all, so any help would be a LIFE SAVER!!