I've just gotten my new water pump in, all new hoses etc. and am starting to check the system for leaks. I'm using a pressure tester borrowed from auto zone and clearly have a few leaks to find - am peaking out at 4 psi. Is there any difference between checking the system dry and filling it with coolant before pressure testing? I'd like to avoid filling until I'm reasonably sure the system is tight. Also - I've got a vacuum connection that's staring me in the face. The large hose coming from the charcoal canister, forward toward the resister pack, across the firewall to the passenger side and continuing on. Right near the heater control valve there is a tee in this line with nothing coming out of the bottom of the T. I didn't see any good reference on Hervey's site, and I don't for the life of me remember what tied in there. It annoys me greatly that half of the car's vacuum system doesn't make it onto the diagrams I've found. Nice that we have all the engine controls documented, but a leak is a leak - is there a better reference that shows ALL of the vacuum in the car? Tom 10902 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/