The idle speed motor takes the place of the 3 brass screws, this is why they are not needed on the DeLorean. Certain versions of the PRV (such as Carbureted) didn't have the idle speed motor and needed these screws to adjust the amount of air each bank of cylinders needed. Unless you have no idle speed motor-keep them all seated. As a side note: The idle speed motor regulates the amount of air going into the engine, thats why when your cooling fans kick on- your engine revs higher to compensate for the increased power draw (Increasing air=Increased RPMS=More power from alternator)-the idle motor adjusts allowing additional air to increase the RPMS. Adjusting the screws with the idle motor will possibly allow too much air, which will eventually lead to mixture problems depending on how much extra air it is getting. -----Dani B.#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/