I just replaced calipers, hoses, and rotors on the rear axle of my coupe. The master cylinder was done last year and the front brakes are in good shape. I'm using a power bleeder.

Now, my passenger side rear caliper won't bleed at all. Passenger side drivers bleeds fine. I loosened the flange on the new rubber brake hose to the caliper to see if fluid would come out and it did. The pedal is intermittently stiff and really soft when the vehicle is running which indicates that there is air in the system. I've tried several times to get the caliper to bleed, but no go. Is there any reason a new, factory-rebuilt caliper would act like this? It seems like it's blockage inside the caliper to me. Anyone have any ideas?

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1983 300CDT -- 177K

did you try other methods of bleeding? or just the power bleeder?

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Current fleet
2006 E320 CDI
1992 300D - 5speed manual swapped

former members
1984 300D "Blues Mobile"

1978 300CD "El Toro"

What do you mean by "won't bleed"? That sounds like no fluid comes out. Have a helper push the pedal hard. Also, remove the bleeder completely. There is likely junk stuck up against the bleeder hole. Had that once on a Dodge Aries caliper, so had a helper push the pedal hard with both feet and a bunch of rust junk blew out. Since then, I only use silicone brake fluid in all my non-ABS cars.

I once put a caliper on upside down, theres a "no bleed" situation

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1985 Euro 240D 5 spd 140K
1979 240D 5 spd, 40K on engine rebuild
1994 Dodge/Cummins, 5 spd, 121K
1964 Allice Chalmers D15 tractor
2014 Kubota L3800 tractor
1964 VW bug

"Lifes too short to drive a boring car"

I did have it attached to the correct wheel and yes, i did try old-fashioned two-man bleeding method with my girlfriend and still it didn't work. I detached the caliper and the new hose and fluid came out of the hose and where the caliper attached to the hose, so I figured it was something internal to the reman caliper.

Turns out there was rust built up around the bleed screw, it looks like pre-remanufacture.I removed the bleed screw and cleaned it out with some wire then reattached. Alls well, all brakes bled and stopping appropriately.
Thanks for your input guys! I appreciate the quick responses.

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1983 300CDT -- 177K

sounds like something from the kama sutra. kinky.