Home >> Audi >> 2011 >> A8 Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> Ignition System >> 4.2L - Ignition/Glow Plug System - Engine Code: CDRA (1 Of 2) >> 28 Ignition/Glow Plug System >> Ignition System >> Knock Sensor, Removing And Installing >> Tightening Specifications