Recently I replaced my old wheel cylinder w/ new units purchased at and Advance Auto Parts store. I've spent hours trying to bleed the brakes. I still get a large amount of air out of them. I checked all under the car and found no damage to the lines. Before I changed the wheel cylinders I had a fairly solid pedal (manual brakes front disc). I'm wondering if the wheel cylinders had poor machining in the line seat or bleeder seat. They were not made in the US. I think it was Mexico or China. I can't think of what else it could be as that was the only thing that was changed in the hydraulic side. I thought it was because I didn't adjust the new shoes but still no progress even after adjusting the shoes.
Any insight?
Any insight?