Front brake, much lever movement

[bob2.0]

This one is an odd situation.

My front brake has always pulled in further than the rear, which I put down to having to fill 4 pistons. So, with dual brakes, more lever movement.

But this lever has been getting closer and closer to the handle bars when pulled, to the situation now that I can't really get good braking, the lever won't pull far enough.

The calipers seem to actually be 'too free'. What I mean; I serviced them and cleaned off all rust, etc, lubricated. Now, you can push the pistons back easily with just finger pinch.

But, this means the pistons go TOO far back after release!

The pistons now pull so far back, so easily, that most of the brake lever travel is doing nothing useful but just moving the pistons in air to get to the disc.

Is there something I'm not understanding on these brakes?

[jeff-jordan]

Have you bled the brakes properly and regularly changed the brake fluid—or topped it up when necessary?
The brake fluid reservoir must be filled to the top (no air bubbles!).