Is it a metal tank? Or plastic.. Would probably be easier replacing..
Not sure if its expired or not, but there was a recall on the fuel tanks for leaking.. Maybe call the kia dealer and find out if they will still cover it?
Model: Sportage
Group: Fuel System(14)
Number: KT2006050901
Date: Thursday, May 11, 2006
This bulletin provides information related to a service campaign to inspect the fuel tank on certain 1996 - 2002 Sportage models. This service campaign is in response to an inquiry by the National Highway Traffic Safety Administration (NHTSA) involving possible fuel leakage, mainly in older Sportages.