I just rebuilt my holley 600 vac. secondary. I forgot to count how many turns out my idle mix screws were when I took it apart. How far out should I take them before I start the car? Any Idea? Thanks.
1/1/2 turns to start and then put a vacuum gauge on it and turn the screws in or out until you acheive the highest vacuum.Try to get both screws roughly the same amount of turns out.