Check the rear brake hoses to be sure they ar not collapsed from the hose restricting the flow of fluid.
Also, it could be the ABS unit not passing fluid to the rear wheels.
Roy
Feb 22, 2018 at 4:12 AM
PATENTED_REPAIR_PRO
✓ASE Certified Mechanic
1,853 POSTS
Did you just replace a brake line or something and trying to use a vacuum bleeder?Because from my experience it is very difficult to use a vacuum bleeder after replacing an entire brake line. I found out I at least had to use the old foot bleeding method first before most of the air is out of that line.
Feb 22, 2018 at 6:30 AM
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