So i have a 85 camaro im having a hell of a time figure out this brake problem.So the problem is after bleeding the system i start the car an get pretty much no pedal like theres air in the system .i replace the booster an still no pedal i have pulled the proportion valve a part an cleaned it samething .i then borrowed a vacuum bleeder from a guy at work an used that.hooked it up to the rear calipers an pulled all air out got to the front an its pulling fluid but its like its air bound an doesnt want to get all the air out its pulling so much air the lil bit a fluid its pulling is milky it will empty the res but its not getting the air out.but if you bleed the brakes by just pumping them the old way fluid pours out but when you start the car an apply the brakes it pretty much goes to the floor.there is new brake line steel braided hoses new calipers new master..im truly at a loss with this problem!!!!!!!!!!!!!!

 

How did it go when you "bench bled" the master cyl?

 

Calipers upside down? Everybody does it once.

At least that's what I tell myself.

 

NO wish it was that simple

 

Time to diagnose. You can start at either end but I would buy 2 plugs for the MC and remove the lines and plug the MC. If you don't get a rock hard pedal with the MC plugged you found where the problem is. If the pedal is good with the plugs remove 1 plug and put that line in and see what you get. Basically isolate each section.

 

Didnt think of that thanks ill try that tonight