As in the title, when I push my fork I can hear a metallic knocking from inside. It also happens when I'm riding and it's very annoying. I know that's not an oring from bottom of MC damper. It knocks even if the damper is put out of the fork. What the reason is?
If anyone wants to know, I solved the problem. Air chamber was hitting air valve and it was causing the sound. I put some teflon tape on place where air chamber touches the valve, it works for 2 days now.