Soooft pedal after disc brake swap

[Citizen Rider]

The blazer has been sitting for some time so i am not sure if it was good on pedal right before the swap, but as of a year ago it was great!

I put new rotors on the 60, and did a disc conversion on the 14. Bled 2 large bottles of brake fluid through, and the pedal goes down 3/4 or more before it gets good pressure. A friend of mine swears there is air in the soft lines connecting to the rear calipers, but anyone ive talked to said it was a breeze bleeding the system.

What could be my problem?

 

[AZ79K5Project]

I had the same problem. The first time, my master cylinder went bad. Once I replaced the MC, I could only get all the air out by using a power bleeder I made. I couldn't get it bled by traditional methods.

Bled the whole system in about 10 - 15 minutes. LINK