Brakes too tight

[todda7]

When changing the left rear brake disc, I noticed it was very tight between the brake pads and the disc, compared to the right side. After taking the car for a short drive, the left disc was untouchably hot while the right side barely was hot at all.

How should I fix this? Just rotate the brake piston clockwise with some big pliers? I don't have a have access to a piston 'rotator-tool'.

[bmos]

When changing the left rear brake disc, I noticed it was very tight between the brake pads and the disc, compared to the right side. After taking the car for a short drive, the left disc was untouchably hot while the right side barely was hot at all.

How should I fix this? Just rotate the brake piston clockwise with some big pliers? I don't have a have access to a piston 'rotator-tool'.

You changed your rotor without doing pads?

If the caliper is seized, you won't be able to screw the piston back in. Alternately you could have a hose restriction. If you can't screw in your piston, try opening your bleeder screw while doing it. If it works with the bleeder screw open, it's a hose/line issue.

Change your brake fluid every couple years or at least test the water content and this won't happen...

[walky_talky20]

A clogged line causing a caliper to hang up is quite rare. Much more likely to be the piston dust boot has failed and the piston is rusty. This causes the piston to extend, but never retract. You can pump the piston the out, clean it up and reassemble with a new seal and dust boot (aka: rebuild the caliper) as long as there is not significant pitting of the piston surface. Or you can replace the caliper. Due to the high availability of low cost remanufactured calipers nowadays, most people elect to replace the caliper rather than rebuild.