So I changed the pads on the rear brakes tonight. No problem easy and such. Well afterwards they felt spongey to the point it would hit the plastic and barley slow it down. So I thought bad pads. Put the old one's in and now there doing the same thing. Also the rotor is heating up really warm when just going around the corner were its hot to touch telling me its rubbing. They worked like literally 5 min's ago before this no problem with strong pedal.

Did the following:
-Re bleed line
-Re-adjusted pedal
-Made sure nothing was leaking
-Piston is retracting can see it

 

Are you 100 percent sure you have the pads on the correct way? I've seen people put them on backwards, and also have seen people put them both on one side of the rotor.

Also, how did you push the piston back into the caliper to fit the new brake pads?

Im not sure what bike you have, but does the caliper slide freely on the mounting bolt?

 

For pushing the piston in i used my automotive tool that pushes them in

For brake pads how could you do it wrong? I just put them through that bolt. Is there another way I am not aware of?

Bike is 2002 F4i. Caliper has bolts lubed up and such. It moves freely when I push hard on the brake you can see it move back and forth.

 

Yeah, it should be easy to do, but I was just stating to recheck because things happen that shouldn't happen all the time., thats all.

As far as the pads, did you make sure the other end of the pad is resting in the groove?

Also, sometimes if the pads backer H-groove is smaller than the groove on the calliper, it can be too tight and drag. You may have to file a little bit of material away from the pad's backer as it hangs up in the groove. But you would have to check. Its not a common thing in motorcylce pads, but very common with auto pads.

I would take a magic marker and mark both sides of the rotor. Rotate the wheel a few times and see where the marker is being rubbed off. That may lead you to where the pads are hanging up.

Did you remove the rear tire at all? or just change the brakes?

sorry not much help, but theres really not much that can go wrong.

 

Does you're rear brake have anti rattle clips? If so, then they can come loose or miss align & interfere with the movement of the pads.

 

yes they have two one in the center of the caliper and the other is on the bracket

 

-So I did it today re bleed with the lever nothing changed
-Took the anti rattle clips to see if they were interfering nothing changed

Everything is dry no leaks. Piston moves freely back and forth. I can push piston easily in with my hands if I want so its not seized. The boots were the bolts go are sliding back and forth easily.

Just seems like I can not make it stiff no matter what. Think for some odd reason that the master cylinder got shot when pushing the piston back in wrecking a internal seal based on pressure?

 

if thats the case krux i have a whole rear assembly, caliper, master cylinder, res and all im sellin for 30 bucks...

so get at me if u need it