Why did the Japanese not destroy Pearl Harbor's gasoline and oil reserves?
Short answerThe recollection given is that those targets belonged to a further wave that was not launched because the attackers chose to limit risk, sacrificing a chance to delay the American recovery.
NotesThe fuel reserves are tentatively associated with a later wave that was not launched. The raid is characterized as conservatively aggressive: Japan struck hard but still tried to limit losses to the force carrying out the operation. Destroying the fuel infrastructure could have bought additional months for Japanese consolidation. It would not have solved the larger strategic problem created by going to war with the United States.