boost leak from brake booster?

[spitefire1]

i just put a jmf smim on my car and i notice know after 5 psi of boost, their is a boost leak and it sounds like it is coming from the brake booster. know ive talke dto many poeple and they said you have to have a check valve into the line from the booster to the smim. is there one f the stock line,or stock manifold? can i buy a check valve or something to put into this line . some one please help thanks

 

[420a-t]

It's built inthe actual hose that goes to the brake booster. You can test it by spraying air in one side of it and them the other and see which way it will let air through to make sure you didn't put it on backwards.

 

[spitefire1]

could i buy a universal 5/16 check valve for this!

 

[Fast-Orange]

probably, whatever fits on your hose its pretty generic just a one way check valve that plugs into the booster http://www.vcoa.org/700-900-faq/ImagesProcedures/BrakeBoosterCheckValve.gif

 

[420a-t]

Yes. Look at usplastics.com first. They have all check valves for really cheap.