I have done this quite a few times on my teg, but never need to bleed the brakes.

But yesterday, I changed my pads on my 92 civic and now the car's brakes are mush. The first time I push down, it goes down 85% before bite.... I can pump and get pressure, and the pressure holds, so the master cylinder should be fine. It feels like air in the lines. I bled the front brakes only today and not much of a difference.

What should I do ? 4 wheel bleed (rear drums), or rebleed the fronts ?

X2 (Feeling stupid)

 

Bleed all 4. Each front is on the same circuit with the diagonally opposite rear. Once you get air in the circuit you have to bleed both brakes on that circuit.

Anyway, bleeding all 4 is good so you have fresh brake fluid everywhere.