Hi again, on a brake booster if I use a hand vacuum pump to simulate engine vacuum on the booster, I suppose it should hold vacuum right ?

I did that and it doesn't hold, the hose and check valve are ok. The brake pedal travel is very short and pretty hard.

Thank you

 

Chances are your booster is bad.

 

You do have to pump it a lot , did you give it a good try?

 

Thanks, well pretty good, but maybe there's a better way to test it

 

With a bright flashlight, can you visualize any leakage/seepage from or around the booster? It could be a tell tale sign but still if no leakage/seepage it doesn't rule out a bad booster.

 

Can you hear it with the engine running?
The seal between the master and booster may be leaking.

 

Yes I could try that, thanks

 

I can't start it because I'm waiting for the fuel line, but I will do that, thanks