need help with vaccum brakes

[blackgn231]

I tried to tee off of the PCV valve but will not hold when trying to build up boost is that the problem that is causing this? I have the TTA block now and am going to try it , they stop ok a lot differance from power master but easy to hook up just need to get them a little better could it be the back brake shoes not being adjusted causing this?Anyone ?

 

[turboc87gn]

That is a normal problem with vaccum brakes cause when you are building boost there is no vaccum.... the only thing i think you could do and im not 100% sure is add a vaccum canister....

 

[turbo1962]

I installed a Vaccum canister,I could not tell any difference, I went with the s10 wheel cylinders and the soft compound long shoes. will hold 10psi now, before 0psi.

 

[roboteq-1]

vac pump

You coul also tee in a 12v vaccuum pump to your cannister- there are several good make uot there- they WILL NOT provide 100% but will help.
Robert