The engine produces the same amount of vacuum whether it's idling off cracked throttle plates, opened manifold screws, or CIS. All three accomplish the same thing. One thing cracked throttle plates will do that neither CIS nor the manifold screws will is open ported vacuum. On a stock DeLo setup that only affects charcoal canister purge. Bill Robertson #5939 >--- In dmcnews@xxxxxxxxxxxxxxx, "Joseph Kuchan" <josephkuchan@xxxx> wrote: > > You should start by readjusting the throttle to the proper position. You > will never fix it if you make "masking" adjustments, although I know you did > that just to get by with the intention of fixing it properly at this time. > By turning the throttle adjusting screw you almost certainly reduced the > amount of vacuum the engine produces. That can affect your braking, among > other things, so start by getting that set properly. > > Next have a look at the idle speed motor and its controls. > 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/