Car wont start when I put gas in it on 2004 Kia Optima

Everytime I put gas in my car it will not start unless I give it gas. It starts perfectly fine everytime after I put gas in it. What could be the problem?

Asked by for the 2004 Kia Optima
Are you 'topping off' your gas tank, meaning you keep clicking the nozzle even after the first time it clicks off. I mention this because many people do this, and they don't realize that they can flood their vehicle. Then it takes a long time to work out the extra fuel. If not, then have your power train computer scanned to see if there are any codes that would cause this difficult situation.

Good Luck!