Quote:
Originally Posted by Novette_71
i bench bleeded the master cylinder. i bleeded the whole system like you normally do it with a partner .... open caliper valve - push pedel - close valve - release pedal .....
problem is when you release the pedal you have lots of bubbles in the rear chamber of the master cylinder.
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I'm not the most experienced tech in the world, and I don't pretend to know every way to accomplish a job, but your description of the two person bleeding method doesn't jive with what I've used in the past.
I always pump up the brakes with the caliper bleeder closed (three to four pumps per cycle), hold the pedal down, then have your partner open the caliper bleeder. The pedal pushes to the floor, you keep holding it until your partner re-tightens the bleeder screw. Rinse, repeat.
There is always the possibility that your master cylinder is defective or thrashed. These things tend to come defective out of the box more often than any car part I've worked with.