why won't the car restart? on 1993 Lexus LS400

car ran out of gas. person put more gas in then tried to start car and it did not start. what could be the possible problem with it? want to know because i'm interested in buying the car. is it an easy fix or not??? thank you!

Asked by for the 1993 Lexus LS400
It could be that the fuel pump failed. Need to do a fuel pressure test to be sure.