Hello; I'm not clear on what kind of pump you are talking about, is it the pump you use to fill your planes fuel tank from your fuel bottle? That's the only fuel pump I have ever used. I do read a lot of people do use fuel pumps to move the fuel from the tank to the carberator, I have been flying since 90' and have never needed a fuel pump to get the fuel to my engine, and it seems to me that a pump could be usefull to solve fuel delivery problems that could be solved by positioning the tank correctly. I use one of those hand cranked fuel pumps to fill my planes.