1998 charade fuel cut off switch


i was driving my car last night and all of a sudden the car slowed down n every time a pressed the accelerator the revs dropped then wen i baraked the car did not start again. i kept tryin to turn it over but it would start for a second the cut off. i think it mite be the fuel problem cuz its not holdi the revs. i need to find where the fuel cut off switch is so i can give that a try?