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Got a set of E4 brakes, front is the 4 pot. The brakes are about 3 months old and the last couple of rides the front brake "drags" on the rotor after the lever has been pulled. Couple of squeezes and the noise stops.
So, sticky piston? Or something else.
Solutions?
Cheers
Best thing is take the caliper off and push the pistons back in. Then squeeze the levers to see what's happening. Mine do this now and again and I give them a clean and lube. Just be a bit methodical and play about with them one at a time until they all run smooth and even.
I use a bit of string to clean around the piston and a wee paint brush with some red silicone grease that I got from the bike shop.
Cheers.