.15 Engine choking? need help
 

Hi guys I am new here and new having an nitro, I have a CEN CT5 about 1 month ago, and yesterday i tried running it in a huge parking lot and see how fast it goes, then i ran out of gas and filled it up, all of a sudden it sounds like it's choking and it won't even go to second gear. I dont know what to do, please help!