Bleeding rear disc brakes

I have just replaced both rear calipers and tried bleeding them the usual way with a vacuum pump. However, the brake pedal is very spongy and on the first push it goes to the floor. Is there a better technique or method ? I have never had a problem with the vacuum method before.

Thanks for any suggestions.

I had a similar issue in my 2004 Mountaineer, used the MityVac and bled until there was no apparent air in the system. The pedal still didn't feel right afterwards. I then purchased the brake bleeder kit from Harbor Freight (http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=92924) when it was on sale for $19.99 and tried it out. It worked GREAT, I now have a firm pedal and good brakes.

The other option would be to install a set of Speed Bleeders and do a one person bleed, or use another person to perform a 2-person bleeding. Either of these methods would likely give similar results to the Harbor Freight system in the event you do not have a large air compressor.

-Rod

Thanks Shorod,
I used the "two person" method and now the pedal is rock solid. Perfect !
I guess the mini vac did not have enough pull to suck out all the air, so pumping the pedal did the job. Thanks for your advice.

Glad to hear you have a safe pedal again. Thank you for the follow-up, and congratulations!

-Rod