I was tuning my Quadrajet.....ran the idle mixture screws all the way in and started backing them out a quarter turn at a time on each side I got the highest vacuum reading at only one turn out, does that make sense? One turn out meaning a full 360 revolution of the screw.
This is an older thread, you may not receive a response, and could
be reviving an old thread. Please consider creating a new thread.
A forum community dedicated to Chevrolet Chevelle owners and enthusiasts. Come join the discussion about restorations, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more!