The Stovebolt Site Forums The Parking Lot Tons 'o Fun Accelerator Pump

I have a '48 3800 with a 216 and I am having a bit of trouble with the carburetor. I have rebuilt it and have replaced the accelerator pump plunger one more time after that while trying to address the issue but I am still getting a stumble off of idle. Curious if I am missing something in the carb that might help remedy this issue. I plan to check timing tomorrow but other than that I am a bit stumped.

On the bright side, I started it again for the first time this year and it still fires right up (once fuel gets to the carb) and has no leaks! Got a little bit coming out of the rad overflow once it got up to temp but I think that was just from topping off the radiator a bit too far. Before this it sat in a barn for 20 years and last year it fired up without much trouble (after I converted to 12 volt) and no leaks then either.