I have a 1991 camaro rs with a 3.1 liter engine!! Lol ....it was working fine the other day until I came home, turned the engine off and tried to turn it back on ...and it wouldn't start. I replaced the battery because it was bad and that was half the problem, but the engine still won't turn over...it'll turn on but not start...spark plugs are firing and fuses are in excellent condition. My friend thinks its a fuel problem, but you can hear the fuel pump...I need serious help