Hi, just a quick intro. I have a 54 F100 Y block. The truck runs very well. The only issue I'm having is that I get a pop coming from the carb during low RPMs. At taking off, if I accelerate (OK, if I ease very slowly on the accelerator), and or when making a slow turn, and shifting into 2nd gear, and I start to accelerate. I had the carb rebuilt, but I still have the issue. I thought it may be the accelerator pump. Can this be a stick valve?

Thanks for your help in advance.