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#1 |
Registered User
Join Date: Mar 2005
Location: Just outside Durham, NC
Posts: 894
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proper carb adjustment steps
For those of you following my previous saga, my rebuilt economaster carb is on now on my truck and running very well, but I am having difficulties adjusting the carb, the holley manual is not very helpful (it references smog equipment that my truck obviously does not use).
I have tried to set the idle using the idle screw on the throttle level, when it starts it runs at 2k, if I turn it down it won't make much change until it gets to a point where it will stall out. I thought maybe I needed to wait until the engine was warm, so I waited until the engine hit operating temp, turned down the idle screw, and got the engine to just below 1k....but if I rev up the engine a couple of times, when it goes back to idle, it sits at between 1,600 and 2,000 rpm again. I thought maybe I needed to adjust it via the mixture screws from there....and I seem to be chasing my tail.....what are the proper steps to set the idle and mixture screws????
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1969 SS 350 Camaro Sold 2008 1970 3/4T K20, stock height with 33's, 250 I6, 3 on the tree, and locked front and rear 4.10's ![]() 1980 Chevy Malibu 2 dr Sold 2007 1993 Olds. Cutlass Ciera Wagon Traded 2006 2003 Saturn L200 w/5pd. D/D My list spans 5 decades with One common thread.....GM! |
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