i ran out of gas yesterday while drivin in my 91 4 door. i put more gas in, turn the car on , but theres no fuel pressure. i turn the fuel pump on a bunch of times and it whines a lot but sounds like no fuel is going thru it. ive never had a prob like this before. twanksta said somethin bout air being in the system, can i get the air out or do i need a new fuel pump.