An inoperative vacuum advance will cause an increase in fuel consumption, knocking under a heavy load (accelerating) and a loss of power. Under severe conditions it can contribute to overheating. The motor will run better with it hooked up and working. Check that the mechanical advance is working and check the initial (base) timing. David Teitelbaum vin 10757 --- In dmcnews@xxxxxxxxxxxxxxx, "TalksToGod" <5n-@xxxx> wrote: > Since my car is in pieces and I am going over everything-I find that > my vacuum advance on my distributor is inoperative. But the car ran > fine and even drove fine with this inoperative, so what are the > effects from having a bad vacuum advance? Thanks 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/