I have a 1982 Chevrolet Suburban with a 305 engine. Lately as I'm driving it feels like I'm losing fuel pressure and then it dies. It will add almost always start right back up and it seems to happen more after I've just put gas in the tank. I'm trying to trouble shoot so that I can try and fix it myself. I know I need a new carburetor but I think this might be something with the fuel tank or fuel lines. Any thoughts?