I found some time to mess with the car yesterday and am still a bit mystified. After running the engine for a while, I noticed that the secondaries were going drip drip drip when at idle and kept it up even after shutoff for a while.
I have the pressure regulator set at 4psi.
This carb is an 1850-9. The vent tubes are actually part of the carb casting. There are no float bowl sight windows or external float adjustment screws on this carb. I am running a Holley air cleaner and there is no interference with the vent tubes.
I pulled the float bowls and all looks good. They are adjusted properly, there is no leakage at the valve body, the power valve is good, the engine has never backfired since this carb was installed, and all was clean.
This was actually a disappointment because I was hoping to see some crud that I could wave my magic want at to cure the problems.
This carb came with the blue foam gaskets.
I disconnected the fuel line between the carb and fuel pump, filled it full of carb cleaner and blew it out with compressed air and then repeated the process a few times. All of the rubber lines have been replaced but the original metal lines were re-used. It was amazing how nasty the gas looked the first time I blew it out but no chunky stuff came out and there were no signs of the black peeled paint looking crud that I have seen in the filters. While I was at it, I ran some carb cleaner thru the fuel pump.
After reassembly, the secondaries were no longer dripping but the engine is still a bear to get started when hot and still wants to stall when coming to a stop or executing a slow corner. Sounds like a good excuse for an extended test drive. I’m sure Haggerty will understand.