Help please

[mbronsell]

I have pressure tested my 2000 S4 with a bit of kit from a forum member, took pressure upto 5 psi then disconnected airline, you can hear pressure gently bleed off over 5 seconds, There is a light hissing around the grey valve under the passenger side plastic trim next to the main air inlet pipe, should i replace this valve?

[S4]

5 psi is not enough... take it up to 15 if you want... I have said many times before, that valve... the grey one on top of the F hose, will let a little back.... At first I thought it was a faulty valve, so I purchased another... same again, you do get a little bit of air, in the reverse way. but its cheap, so does not harm. and the 2 green ones on top as well.


Darren