It is possible, I have not taken that connection apart yet. I would still like to know which area of the system I pressure tested so I can identify if the pressure is falling thru that portion of the system. If I measured the primary, then it seems to be holding proper from what I read in the manual (minimum 1.7 bar after 10 minutes sitting). If I didnt measure primary, then do all I have to do is turn my tester around to measure primary? Samuel To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/