Just checking I am not going insane over this...
I have Shimano MT400's on my commuter. The rear one works brilliantly. The front one though is awful. There is no "bite", very little power and a dreadful piercing squeal at slow speeds.
So far I have:
- Made sure that the rotor isn't warped and the alignment is right
- Noticed that one pad was wearing more than the other. Put new pads in and pushed out both pistons to apply some brake fluid as a lubricant. Pushed the pistons back in obviously!
- Carefully bedded in new pads.
Another thing I have noticed is that when I reset the pistons it is taking quite a few lever pulls to get the pads back to the disc - normally it only takes a couple.
I am thinking that there is something wrong with one of the pistons - but want to make sure that there isn't anything obvious before I go replacing it (I don't like just binning things off, would rather fix).