run on empty

break into a run

To start running.

common run

Ordinary persons, things, or events.

dry run

A practice or rehearsal; especially, one that goes through all the motions of a physical process but without the raw material or workpiece present.

dummy run

A trial or practice before the real attempt.

empty suit

An ineffective or incompetent person in a place of authority.

empty the clip

To compete with great vigor, especially by making numerous scoring attempts.

empty the tank

To make the utmost effort; to contribute to the absolute limit of one's energy and abilities.

empty words

Any type of talk with little meaning; a message that seems to contain meaningful content but is actually vapid.