My Fiat 124 1970 sat in the Garage last 6 years. So I Installed New Master Cylinder because the other one was 40 years old/ seal was leaking. Replaced Calipers/lines and compensator valve in the rear. I bench bleeded the Master Cylinder before it was installed. I have made several attemps to bleeding the front calipers, and air is still in the system. Currently have no pedal. The rear calipers are just as difficult. Their are no apparant leaks, just no pedal. I have not replaced the Booster, but It should not interfere with the system. Anyone have any ideas?, does the motive bleeder work, currently using hand held bleeder.

rebleed the master cylinder, then start at the offside(right hand side of car) rear wheel,get a assistant to help you by pumping the brake pedal, then move onto the near side rear(leftside) then, goto the nearside front (left side) then the offside, see how you go,

Thanks , I will give it a try

Make sure the rear axle is supported and not hanging. If it is not supported the compensator will cut-off flow to the rear calipers.