misfire
Definitions
To fail to fire or explode properly, as with a gun or engine.
To fail to achieve the intended result or effect.
Examples
The engine began to misfire, causing the car to shudder violently on the highway.
His attempt at a witty joke was a complete misfire that left the entire room in awkward silence.
The detective's plan to trap the suspect was a total misfire when the informant failed to show up.