Initial 40idf Setup on 2056 Options

[7275914911]

Somebody help a brother out......

Rebuilt my idf's but need a baseline for setting the Idle Air adjustment (the one with the nut) back to it's correct location. I have an initial setup of 1 1/2 turns from notes when they were re-jetted 3 years ago but since this screw does not bottom out like the Idle Air adjusters I need to know where those turns are from??

Is it from the back of screws being flush inside with the throat or the front of the screws bottomed out on the nut? Or something else entirely?

Note to self to mark that kind of stuff in the future and to get that Weber book from Shoe. Oh wait I had someone else rebuild them.... (IMG:style_emoticons/default/dry.gif)


Thanks in advance for replies...
Ken

[ThePaintedMan]

Both the idle mixture screws and the air bypass screws should "bottom out." The air bypass screws, as Chris (IMG:style_emoticons/default/pray.gif) described are the ones with jam nuts and they get tightened down all the way till they stop. You can leave the nuts loose for not until final adjustment is done.

The idle mixture screws (the ones with the springs) typically start at 2 1/2 turns out from bottom, but if your notes say you had them at 1 1/2 before, then that's a good place to start, as that's probably near where you'll end up. Bottoming out those consists of turning them in all the way until they do not turn anymore. Then back off 1 1/2 turns.