Check that fluid for sure. It's most likely a leaking fuel line..., or faulty fuel pump. Fuel pump changes are a pain (especially if the pump's in the tank). Those are a pain to change yourself. (note to self.., don't EVER help someone change the fuel pump on a 1987 Dodge Dakota after finding out the guy filled the tank completey before the change..., knowing his fuel pump was going bad--man that was a nightmare).