2005 Rincon
I had to replace the brake lines on this bike I bought because some fool cut the line.
I pump the handle brake and it builds pressure then crack the bleeder nut at the wheel and brake fluid squirts out(both sides over and over).

Pump handle brake again and it hardens but when I leave handle alone for a couple secs, all the pressure is gone.

Is it because I still have air in the lines?