akellym

So I did the WJ brake booster upgrade to my 93 and at the same time I replaced all the brake lines and have new calipers and upgraded to rear calipers so the entire brake system is new.

The issue that I'm having is a very soft pedal when it's running the pedal is firm when off. I have rebled everything multiple times, I have gravity bled, power bled and the wife pump the brakes bled, rebled the master cylinder 4 times... so it's not air in the lines/system. Only thing I can think of at this point it that the new master cylinder is bad???

Anyone have any ideas on what the problem could be or something I should try before replacing the master?

Thanks

Jim Malcolm

Try bleeding the proportioning valve by loosening the spring retainer at the front...

EvanM

I stopped reading at entire system is new.

My mind right away yells at me saying that theres air now in the system. Ive found shops and backyard techs have a rough time bleeding brake systems.

Yours possibly may be perfect but its not very likly.