Hold the throttle open and adjust the choke thermostat untill it closes the choke plate. You want just a little tension when you push the choke plate open. Now hook a hose to the choke pull off and suck vacume on the hose (mouth vacume is sufficiant) when the pull off reaches full travel the choke plate should be standing about an 1/16 of an inch open,you usually have to adjust it by bending the linkage arm. Close the choke start the car and adjust your fast idle screw to about 1400 rpm.....