No brakes

[BSPerformance]

I just completed a Sr swap an don't know if I hooked somehting up wrong or what. I have no brake pedal its not stiff or anything, theres nothing to it. When I push the brakes at idle it will make the car stall. I have the master cylinder hooked up to the intake manifold.

[projectRDM]

Sounds like the check valve is either backwards or defective. Check it and see.

[g6civcx]

The one-way check valve goes between the booster and the vacuum source. It only lets vacuum go one way and not the other = one-way check valve.

Follow the FSM diagram to test the one-way check valve. There is a picture of a guy blowing and sucking on the valve.

Then check for vacuum leak in the hose itself, or possibly the booster connection.

[mrmephistopheles]

There is a picture of a guy blowing and sucking

:ughd: :ughd: :ughd: :ughd: :ughd: :ughd:

[g6civcx]

:ughd: :ughd: :ughd: :ughd: :ughd: :ughd:

You can't make this stuff up.

I submit Exhibit A:

http://img293.imageshack.us/img293/151/brakecheckvalvexw0.th.jpg (http://img293.imageshack.us/my.php?image=brakecheckvalvexw0.jpg)http://img293.imageshack.us/images/thpix.gif (http://g.imageshack.us/thpix.php)