A liquid discharger comprises a head including a nozzle face and a nozzle that discharges liquid droplets, the nozzle formed on the nozzle face, a carriage that mounts the moves the head in a train scanning direction, a driver that moves the carriage in the main scanning direction, a cap that contacts and covers the nozzle face, a cap mover that moves the cap between a capping position, in which the cap contacts the nozzle face, and an evacuation position, in which the cap is separated from the nozzle face, and processing circuitry configured to judge whether a capping failure has occurred based on a driving force that is measured when the carriage starts to move in the main scanning direction after the cap mover moves the cap to the capping position.