Cleaning Your Keurig Brewer Needles in Blog If you experience inconsistent brews, there may be some coffee grounds stuck in the needle that pierce the K-Cup packs. This video shows how to safely clean this area of the brewer. Related Posts Keurig K40 Elite Brewing System Unclog/De-Scale a Keurig MachineThis video shows how to properly unclog a Keurig machine and restore proper water flow Keurig K50 The All Purposed Coffee Maker, Black