I have experienced idle problems on my D as well as other problems with the fuel injection. Finally, I purchased the Bosch Fuel Injection System manual by Bentley. It has been a tremendous help, and has a good discussion on the brass idle screws. Thus, I disagree with modifying this system. I going from memory, but I suggest adjusting the R & L screws to balance the 2 banks and close the center as intended. If the car idles too high, fix the idle motor. Sticking, worn throttle linkage may also cause the same symptoms. 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/