the fuel system is a sealed system with a one way check valve which should
allow the tank to inhale but not exhale . All 79> also have a small plastic
tank above the right rear wheel , looks like a bed pan , it is called a
compensating tank it has fittings which connect to the vapor recovery system
, the charcoal canister in the right front fender . In short , if fuel is
running out onto the ground something is broken !!!!
"where is the fuel sender located? I would like to check it out for fuel gauge level."
Pull up carpet in the hatch area. On RH side of floor you should have an insulating material glued or taped in place. Pull that back and there should be a large (maybe 5" diameter) plastic body plug. Pry off the plug and the sender is staring back at you. Pull electric plug and disconnect fuel feedback line. Unscrew plastic ring holding sender in place and you're there.