How do you siphon gas from a common passenger vehicle you have bought several gas siphons from hardware stores the hand pump and the push pump and you can never get it to work It always seems like im?

modern cars have a anti-syphon swirl pot spot welded in the tank for 2 reasons 1. fuel secruity 2. prevent fuel from rushing up the filler pipe to prevent leakage on high speed cornering. Also you need to make sure the end of the pipe is lower than the tank so make sure the container you're using to put the siphoned fuel is on the floor and put the pipe right at the bottom. If it is an older car.