found my 66 122 has the front brakes "locked up". Really tight and won't let go. I pulled off the calipers and cleaned them off with brake cleaner and the look ok. I also checked the brake lines, passenger side squirts fluid out when the pedal is depressed. Driver side has nothing coming out. I checked the hard line and soft line nearest the brake and they are clear. Should I be worried about the remaining hard line, or ???? How would I check? Can I blow air backwards thru the hard line? Could this be a clot? Any and all help will be appreciated.

Thanks, Mike

Are the brakes unlocked now that you have disconnected the lines?

If your calliper pistons are corroded or in generally poor condition it's common for the pads to get locked against the discs by residual pressure if the car sits unused for a while. You can lever the pistons back with a screwdriver but it will continue to happen until you replace them. Blocked pipe sounds bad but easy to replace with new, Sounds like the whole system needs a thorough overhaul. Stopping easily means stopping safely.

Try fishing a small wire through the line