Paul, If there is no screw down inside the air flow meter where you inserted the 3mm wrench, Unless someone has one or it isn't down inside the air flow meter, then you will need to go to the wrecking yard and buy a similar set up off an early Volvo and carefully take it apart. The screw is a very fine thread and has a keeper on the bottom of it, so don't pull on it. There is a picture on my fuel reference page as to what it looks like. John Hervey http://www.specialtauto.com/delorean-parts/fuel-system-references.html Original Message----- From: dmcnews@xxxxxxxxxxxxxxx [mailto:dmcnews@xxxxxxxxxxxxxxx] On Behalf Of sweetp01569 Sent: Friday, September 09, 2005 9:09 AM To: dmcnews@xxxxxxxxxxxxxxx Subject: [DML] Missing Fuel Air Mixture Screw I was about to check into the fuel air mixture for my idle problem. After pulling the plastic plug from the hole, I come to find out that I have no fuel-air mixture screw! My 3 mm allan wrench simply passes through the open hole to the air flap mechanism (sorry for the nontechnical term for this). A little hard to adjust without a screw! Is there a replacement for this (the parts manual just indicates the rubber plug), or can I buy at a local hardware store? Also, it looked like there were no threads in the hole. Do I need to tap it? Anyone else come across this? To refresh, my idling problem is this. Relatively smooth idle before I changed water pump, plugs, wires, distributor and cap. After the job, my cold idle seems smooth, but when engine reaches temperature, the idle goes up and down, almost stalling then catches up with a quick rev. It stalled a couple of time, too. I am still looking for vacuum leaks as directed by some of you, but wanted to investigate the mixture as well. Thanks, Paul 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/