no rear brake

[copteaser]

I replaced the master cylinder(yes I bled the master cylinder before installation), replace proportioning valve, replaced new lines, installed a new rear disc calipers kit. I tried everything, I even loosen the large lines that comes out of the rear proportion valve and took off the master cylinder covers but only a few drops came out. I ran out of ideas, anyone can give me a hint(besides burning this money pit to the ground?) Thanks

 

[Chuck Leeper]

No fluid past the prop valve kinda hints at a problem there......Push the pin in?
One thread on the same topic is sufficient.

 

[copteaser]

Pin??????? what pin? where is that pin located?

 

[Chuck Leeper]

Look in the ft end of the prop valve.
AIRC, there's a procedure that involves pushing that pin in to bleed the rear brakes.
Look on Vortex Buicks site. I think it may be there.

 

[copteaser]

I check vortex buick, the procedure is not there

 

[Chuck Leeper]

Try www.gnttype.org, and see if it's there.

 

[copteaser]

this proportioning valve is an aftermarket and it has no pin in front..

 

[charlief1]

Is the master new or rebuilt?

 

[copteaser]

rebuilt master cylinder

 

[charlief1]

Take it back and get a brand new one. Rebuilts are hit and miss, but mostly miss these days. When someone brings me a rebuilt unit I warn them that if it's not right they're going to pay me to take it back off and put what ever they get the second time. I had 1 that I went through 4 rebuilt ones before the guy finally bought a new one. He paid me for all 5 installs and wasn't happy to say the least.

 

[Chuck Leeper]

this proportioning valve is an aftermarket and it has no pin in front..

Is this a stock type prop valve? An aftermkt like a Wilwood?

 

[copteaser]

it is an aftermarket prop valve..

 

[turboc87gn]

Yup Try a different master cylinder....