i just put an edelbrock carb on my truck, how do i set it, it idles to high and i don't know if the fuel mixture is good, i bought this carb used and did not recieve any instructions
thanks,
jeremy

 

Start with the two mixture adjusters screwed out by 1.5 to 2.5 rotations. Anywhere in that range is an okay place to start.
You start by screwing them all the way in til they bottom out but DON'T force it as it will damage the pintle on the end of the adjuster screw and/or crack the mixture oriface. Just turn until it stops turning easily.

Next back the idle speed adjuster all the way out to the point that it is not pushing the throttle lever, then tighten it back in by about 1.5 to 2.0 rotations clockwise.

this is a good starting point. From there you set the idle speed to where you want it, and then adjust the mixture as neccessary for best running.

If the engine idles great in park, but then drops too much or dies when you put it in gear, that means the mixture is too low, so you turn the mixture screws couterclockwise (loosen) to supply more mixture at idle. Turn both sides a little at a time until it runs how you like.
Some people use a vacuum gauge to adjust idle mix, others use a wideband O2. You can also do it by how it feels. Unless you make some major change to the carb, it is not going to be that far off from correct. This is assuming nothing is damaged or malfunctioning on the carb, like a flooding situation or clogged air bleeds.