The rack is knocking on the Audi A6. I am eliminating the play. When we checked the chassis, we found that the knock was coming from the steering rod, but it was very difficult to diagnose through the boot, so we decided to order the rod and tip completely, the steering tip still needs to be changed because it is broken. In general, the parts arrived, I went to change it and found that the steering river has play. Aha, the steering rack is knocking, what should I do? And I remembered that I had already tightened the rack once and eliminated the play.