I rebuilt both rear drum assy's and with new wheel cyl and replaced front right rubber line then i bled the system rf,Rr,lf bled fine my issue is when i went to bleed the Lr no fluid came out is it valve or alot of air in the system?

 

Could be a collapsed brake line.

 

Hi jkeaton I took the line off that gos to the lr wheel that valve or block thats mounted behind the back axle with the rod threw it had my friend start up the brakes and pump them and nothing came out could it be the problem?