Originally posted by CafeenMan
The fuel will run back if the carb is open and the tank is slightly lower than the carb. It's not a big deal. It happens on most of my planes. I just choke until I see fuel actually enter the carb and then stop.
Once the engine is started, it will run long enough on the choke to start drawing fuel.
In other words, it's not something to be concerned about.
Yes, I do see how the fuel does get "pulled" back into the carb once the engine turns over.
Thanks!