Holley replaceable idle air bleed jet changes
OK, asking again.
If the 4 idle A/F screws are turned all the way in to make engine idle best, what does that mean?
Original size is .070". I tried drilling them out 1 number size to .073" and it made no noticeable change.
I just think if eveything is correct, it should idle best at 1 1/2 to 2 turns out.
The throttle is positioned at idle so that .030"-.040" of idle slot is showing below blades.
Do I need to try a going to larger orifice size or not?