Here’s the latest reader question, along with my reply!
Cyndi asks: I recently had brake work done by my boyfriend. He had the rotors machined to a new surface and put new pads in the original calipers. When I apply the brakes and release them, the brakes “stick.” Any advice?
My reply: It seems likely to me that one or both front calipers have sticky pistons. When you depress the brake pedal, hydraulic pressure is applied to the brake fluid inside the brake lines. This fluid pushes the pistons within the calipers outward, applying braking force (via the friction pads) to the rotors. These pistons travel with a bore. These bores can become sticky – via rust, for instance. If the rust (or just gunk) isn’r severe, you may be able to clean the bores using solvent (nothing abrasive!) and get the pistons to travel freely again, which ought to solve your problem. But you may end up having to replace one or even both calipers.
Hope this was helpful!
. . .
If you like what you’ve found here please consider supporting EPautos.
PS: Get an EPautos magnet or sticker or coaster in return for a $20 or more one-time donation or a $10 or more monthly recurring donation. (Please be sure to tell us you want a magnet or sticker or coaster – and also, provide an address, so we know where to mail the thing!)