The tank leaks
How much does to cost to repair a gas tank on 2002 Mazda Protege
new tank is 286.99 at autozone.labor is 2.3 hours.
that is not a real world time. If everything goes right it might, but I just did one and it took 2 hours just to get the tank down. Another 1/2 hour to get the corroded and stuck "Quick Disconnect" fuel lines unhooked.