[s-cars] Pressurising intake to detect leaks.

[Tony Guttmann]

I've built a pressure tester that fits into the turbo input hose.
I'm trying to pressurise it with a bicycle track pump (i.e. not a 
skinny little hand held thing, but a serious hand pump with gauge). 
Still much  lower volume than a compressor. 

Anyway, I can't get it to build up measurable pressure, yet when I 
open the oil filler cap, pressurised air comes wooshing out. So I'm 
clearly getting some pressure build-up, but nothing like the recommended
15 psi. Should such a system "hold" 15 psi, or does one have to keep a i
compressor pumping in lots of air? (I've got Samcos all through and a 
Forge bypass valve and a new RS2 turbo and manifold). 
Can't hear any leaks for what that's worth. Thanks.