Rotor Sticking

[PCTechman]

I just replaced my left front caliper that was sticking and had a leak. After replacement the caliper is still sticking. I bled the brake lines, fluid flows full force. Checked for a crimp or bend in the lines. The only thing I can think of is to change the master cylinder. Any other ideas?

 

[Blacksheep Josh]

Just a thought, but try cleaning everything real good. Make sure your anti rattle clips are good and buy new ones if necessary. The caliper itself might be replacement/rebuilding. I believe the rebuild kits are maybe 5-10 bucks each? Also make sure the slide pins are clean and lubricated, and the slide pin tracks. I know mine were pretty nasty and they seemed to work better once i cleaned everything with brake cleaner and a wire brush on the hard steel parts.

 

[wood1]

I read once that the inside of a flex line can fail and cause this. When the liner tears it can act kind of like a one-way valve and hold pressure at the caliper. Food for thought.

 

[TB3]

Rubber flex hoses

Yes as wood said. The hoses that attach 2 the caliper can go bad internally. When 1 goes bad on an other wise good brake system it will swell when trying 2 brake and pull steering wheel to good hose. Always change both as new one will put xtra pressure on old 1. Try that first as they are probably dry rot anyway. Bout $ 20-25 each.Tommy!

 

[PCTechman]

The rattle clips and brake hoses are new. Replaced them last brake job about 6 months ago.

 

[TB3]

Tryin

Try this.With caliper still on . Crack open the bleeder screw and take the other end of your tire tool and put it in between the inner pad and caliper piston. Pry the piston in to see if it moves and fluid comes out. If it moves, try to close the bleeder screw before fluid stops coming out and air gets in.If it doesn't move then caliper is bad. Tommy!

 

[PCTechman]

Wood1:

I replaced the OEM rubber brake hoses with stainless braided lines front & back, because they were swelled and had cracks, even though they were still working...

TB3:

Did it ...Caliper moves....

 

[wood1]

Ah, master cylinder? You only have rear antilock correct?

What if you crack the line going to that caliper at the MC? If there is pressure in the line I think you will have found your problem. If there isn't I would think that it's the caliper. Wouldn't be the first time a rebuilt part was faulty.

I take it your slides are cleaned up and lubricated properly as BS Josh said? If the caliper can't move freely it'll drag.