68 camaro proportioning valve (combination valve)HELP?

[Vince@Meanstreets]

Originally Posted by 72Z/28

Most like air is trapped inside. I disconnected the flexi lines to rear calipers,pushed the brake pedal down and noticed bubbles inside the master cylinder with the lead off.

Is this the reason why fluid not going through the valve or even through the MC ports while lines to the valve are disconnected?

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.