breaking system on 1996 Audi A4 Quattro

I had a blowen break line on the front R after replacing the line I could not get it the bleed the air out, checked the calaper - good - I took the line off the ABS and back bleed the air out of the line untill only fluid came out re conected the line and still can not build pressure but I have good fluid flow on the other breaks
I check for flow at the ABS unit and it just spits (no flow for that line) the other line squrts fluid. Any way to reset/repair the unit with out replacing it @ 1000 $ and up

Asked by for the 1996 Audi A4 Quattro