Knocking Noise
 

now one of my slider seals on the rear caliper of my car is a bit deaded we had to bodge it on.

now it seems that a reel bad knocking has appeared when going over bumps like a metalicy noise and when i press the brake pedal it disappears completley

could this be the root cause of the knocking???

its a bit deaded?

jus get a new seal and see if that sorts it