If I apply a vacuum to the hose attached to the advance, the unit should work, mine just hisses with free flowing air and nothing moves, so this means I have a vacuum leak and bad unit. The engine wouldn't perform well when I first started it and drove for the first 5 minutes, but then it was fine after. The idle speed would vary faster and slower up and down for the first 5 minutes too which I thought was odd, also the idle speed is quite high, around 1000. Is this the effects of my bad leaking advance? Other than that I had no overheating problems, acceleration or knocking problems. Perhaps this just went bad before I started the work on it hence no other symptoms. Thanks -Dan Benedek #5003 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/