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There should be no need to bleed the brakes after replacing the rear (or front) brake pads. Make sure you place a rag around the top of the fluid reservoir to catch any excess as you press the pistons back into the caliper body though. If the brake pedal has gone spongy after pad replacement this suggests that the piston seals have failed or the caliper cylinder facess have corroded. On mine the bleed nipples are on the caliper body.
When you bleed brakes it is necessary to bleed each caliper in turn.
what is the best way to bleed brakes when installing new caliper on front left wheel
I assume you are replacing brake pads? To remove the calipers you need to loosen the bleed valves on the top or back of the caliper (they look like a bolt with a hole in them and usually have a rubber cap). Next you compress the caliper with a C clamp and then tighten the bleed valve. Now remove the two bolts from the back (inside) of the caliper and it should fall off in your hand.
It sounds like the rear caliper is frozen up. If it doesn't move you can't bleed it and it won't operate the brakes.
Yes you will definitely need to bleed your brake system.
yes, when you took the line off, you let air into it. so you will have to bleed them.
Replace the caliper and bleed the brake system.
With an Easy-Out.
No.
Replacing the brake pads is simple, just remove the caliper mounting bolts, retract the piston, unscrew the inner pad retainer and both pads will come right out. Reverse the procedure to install new pads. Replacing the caliper is also simple, just remove the mounting bolts, unscrew the banjo bolt that holds the brake line and replace the old caliper with the new one. You must bleed the system any time it is opened, though.
Since you did not give any details I will have to answer with some general suggestions. 1. standard caliper, use a C clamp to compress the caliper ( no need to bleed system ) 2. If you do not have a C clamp, release the pressure by turning the bleed screw and push the caliper in. you will need to bleed the system if you do this. 3. certain vehicles need a special tool that turns the caliper in ( will have a slot in the piston ), they are pretty cheap and your local auto parts store will have them. When you get there get all over the parts counter person for not mentioning that you would need one.