I changed my rear brakes and once i was done i took it for a test drive, the front brakes worked perfect but my back braked dont work at all. I never bleed the front braked but i did to the back brakes. Im not good at mechanic stuff so when i bleed the brakes i didn't bleed them as your supposed to i just let it sit leaking into a bucket till i was done pressing on the piston. I know i probably did wrong by that but what do i do now? Do my brakes need to be bleed professionally??
My car has 170000 miles.
My car has an automatic transmission.
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