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Discussion Starter · #1 ·
As some of you know I just rebuilt a Rochester Quadrajet for my brother's 84 RC. We got it on there and running well, but I'm trying to adjust the mixture, on his and then mine. I got a rundown on the process from a Chevy friend of mine, but I'd like to run it by you all and get your input.
The way I've been told:

Locate the two idle adjustment screws (not a problem)
Put them both all the way in, then bring them out two turns.
Start the truck.
Bring one screw out until a maximum idle is acheived, then put it in a quarter turn, and write down how far total out it was.
Put it back in to two out
Do the same to the other
Bring the first one back out to what is written down
Adjust idle screw to desired idle.

Well?

derek
 

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Actually to adjust a carb you get the vehicle warmed up, you first adjust the idle to specs usually about 650 or 700 rpms. You then have the screws turned out 2 turns, pick a screw and turn it in slowly until the revs drop off and then you turn it out 1/4 turn, repeat for the other screw, and recheck the first screw again. Sometimes you have to readjust both screws and reset the idle as well as you get it closer to the proper settings. Pat
 

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Discussion Starter · #3 ·
Thanks, I'm gonna go out and do that right now, if I can get to the second (driver's side) screw...
 
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