I would try bleeding the rear brakes again, this time with two people, (open bleeder then push pedal to floor, close bleeder then release pedal, repeat), so you can verify you have no air in the system before I did anything else.

When you leave it open while pumping, you may just be sucking the air back into the system when you let the pedal back up.

Last edited by Phak1; 11/15/2024 1:05 PM. Reason: Clarification
Phil
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1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube
Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc Brakes
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