Ah, the choke problems. I have personaly had both electric and hot-air choke systems. The hot air choke works great when adjusted properly. Also the hot air style will develop problems later in life (my case 20+ years). The thermatic spring in the hot air choke will get erratic eventually. My problem was too rich of a mix, I could not get it adjusted to have a rich mix on start with fast idle, then kick out to normal idle and normal mix. My gas milage sucked... Plan B.
I live in Louisiana it rarly gets below 45 degrees even in the coldest of winters. Using this knowledge I used a conversion kit to install a manual choke. I have the cable discretly mounted to my electric brake controler bracket so it is easily accessable, but not an eyesore. In cold weather I just depress the gas to the floor, pull the cable, start-up, push in knob 20-40 sec later. Problem solved.
Electric is a good, trouble free alternative also. Set and forget with one wire hook-up. I just do not need a choke in Louisiana. So it is a matter of taste, manual is cheap ($7.00 at any parts supply) and positive engage/disengage, electric cost a little more with no need to pull a cable.
Hope that this helps you in your Q-Jet troubles.
79 C20 Bonanza
350/400 4bbl Q-Jet
3.73 14-Bolt Corp.
