if your talking about your float needle..sometimes they gum up..and can stick in the float needle seat..spray some wd-40 on it..with some small needle noise pliers..hemo-stats work the best ( they have a very small tip )..carefully turn the needle around from one side to the other..it will come out...what ever you do..do not spray it with carb cleaner like gumm out !.that float needle has a rubber tip..and gum out will disolve it !.