1987 Chevy Celebrity not getting any fuel

1987 Chevy Celebrity mileage: 61,000. I have a 1987 Chevy Celebrity, that has been sitting for about 5 years. I don't know much about cars, but from what I could tell I was not getting any fuel, because the car will start, for a few seconds when I pour gasoline, into what looks to me to be the carburetor. (It is round, with a choke, and sits under the air breather, but because the car says 2.5FI on the side, I am being told the FI, stands for fuel injected, in which case the car would not have a carburetor, but it sure looks like one to me.) Anyway, I replaced the fuel pump, which definitely was faulty. I am now getting fuel almost up to what looks like a carburetor. A gas line goes to each side of it, and the line in the front gets filled with fuel. (When I unscrew it, fuel squirts out with much pressure). My problem is the fuel doesn't go anywhere. I even took off the carburetor-looking device and I can't see any place for the fuel to go. On the rear side of the carburetor looking device, small gas lines, that come from a fuel canister (located behind right headlight) line up with holes that look like they would allow fuel to pass through. Is it possible that I mixed up the lines when installing the new fuel pump? At present, I have the line that is pumping the gas attached so it will go through the fuel filter. Or could some small outlet (that is too small for me to see) be clogged, causing the fuel to be trapped in the line? All together, the car has 3 fuel lines coming from the gas tank. One goes to the front of the carburetor looking device, one goes to the back of the carburetor-looking device, and the last goes to the fuel canister. I apologize for my lack of knowledge and I hope I have explained the situation well enough for you to understand and help me.