ok here goes.. replaced all power steering pipes on the rack as they wer all leaking. now my steering wont respond it violently jiggers from left to right will only turn from left to right sometimes if i hold it but does it by itself it will not allow me to turn from lock to lock by myself tried bleeding the system to no avail when i empty the fluid i can turn from lock to lock but as soon as i put the fluid back in it does the same thing again. its new fluid everytime. any hints or tips would be greatl appreciated thanks.