Why does your starter motor click and smells of rotten eggs?

A clicking starter motor often indicates insufficient power reaching the motor, which could be due to a weak battery or poor electrical connections. The smell of rotten eggs typically suggests a sulfur odor, commonly associated with a failing battery, particularly lead-acid batteries, which can leak or vent gas when overcharged. Together, these symptoms could indicate that the battery is faulty and may need to be replaced. It's advisable to have the battery and electrical system checked to prevent further damage.