Ok i have a exhaust leek it sounds like it is where the exhaust donut would be but when i took it apart all i seen was this spacer thing it is about 2 inchs wide my car is a 88 camaro with eather a 305 or a 350 i am not shur it is a tbi i was wondering what would be causeing my leek

and when i get down to 1/4 tank of gas it acts like it is runing out and does after a wile