68 camaro proportioning valve (combination valve)HELP?

[72Z/28]

Originally Posted by Vince@MSperfab

I believe so. You have to get some of the air out to get fluid to flow. Especially the master cylinder. Once the master goes dry you have to bleed it again.

Bench bleed the master, then hook up the feed lines to the prop valve then bleed after the prop/combo valve.

Since the MC already installed on the car, can I do the bleed without removing the MC,if possible, How can I do so?

Thanks in advance