You know when someone important in your life dies and a friend consoles you by telling you that they get it completely because someone important in their life died, and they assume it's the same experience for you? Just remember, they mean well.
I know a '40 is not a '34, so take this with a grain of salt. I mean well. For what it's worth:
The fuel bowl level may be right at idle, but once you put a load on it, such as heading up hill in first or 2nd gear, if the Float is not set correctly, it will fluff/flummox and die. Stepping on the gas could. make it backfire and you can damage your muffler, among other things.
I had my carburetor re-built at one of the very best places in the country, Daytona Parts Co., and they missed the float setting. I had so much confidence in their rebuild, which was well compensated, that I couldn't believe it was the carb. I checked out everything else. In the end, I put on an old Carter carb that had not been rebuilt and the car ran just fine, so I sent the Stromberg back and Daytona made good on their warranty.
Problem test drive:
http://www.mktx.com/packard/5-12TestRun.mp4 Starting at Post#714 on Page 72 of this thread:
http://www.mktx.com/packard/5-12TestRun.mp4 and going all the way to Post #750 on page 75, we checked out the usual suspects using other posters as a guide until we had a successful test run.
Successful test drive:
http://www.mktx.com/packard/Test4Suckcess.mp4This Post was from: https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?post_id=222780