Is your master cylinder resivor full, and did you bleed the master cylinder before hooking up the line to the wheels? I had an air embolism and my problem was I forgot to bleed the master cylinder in my excitment to get my Kaiser rolling again. Just something to check. If the master cylinder has been sitting empty put a block of wood under the pedal, you don't want to bottom out the pedal if you have any crud in there it will cut the o-ring and then you will have to do a rebuild.
