why wont my car gas up? on 1999 Lexus GS300

I changed a few parts on my car eg. valves, fuel pump and i also removed my cat converter and now my car starts but wont gas up it does not go anywhere no matter how much i gas up.

Asked by for the 1999 Lexus GS300
Go back and figure out what you did wrong. If it worked before it should work now. Wrong parts, knocked something loose, pinched wires? Double check yourself with
thanks for your advise but i found the problem