The Marvel Updraft Carburetor is one of the most unstable carbs ever designed; yet, it is also one of the most simple also. There is a fine example of this primitive carb in a 1922 Buick that I work on. This Buick I got running one year ago, and it ran great up until now. It has recently lost all torque and wont accelerate uphill.  I removed the fuel pump and carburetor to have a better view of the carb, it was pretty dirty, so I removed it. With the carb off I could disassemble the individual components. The first bits to come off were the needles, I inspected the jets and found them to be blocked. After clearing a passage in the jets so fuel could be aerosolized; the float system also came apart. In there I found the cork float to be shot, luckily I had another carburetor that I could use a solid cork from. I then reinstalled the carburetor and the fuel pump. After making all of these changes I was certain the car would run better, but to my dismay, it didn’t. I will follow up this article and post photos later so stay tuned.