I was out of town for 4 days but before leaving I turned the carb over and filled the recessed area to the pilot jet with dip cleaner for carbs. Upon my return I was able to get a tapered broach through the jet. Then, after filling the recessed area with WD-40, I could blow the WD-40 through the passage with compressed air. I repeated this step once. Then I filled the recessed area with throttle body cleaner and blew it through the passage with compressed air. Since I don't know if the open jet orifice is cleaned thoroughly, I'll get a properly sized jet drill to run through there. I still will not be certain that the remainder of the passage is sufficiently unobstructed. After that, it goes into the magic ultrasonic cleaner. At that point, since I know that the pilot fuel circuit is at least somewhat open, I'll be willing to install the carb and see what happens.
