Quote:
Originally Posted by ah-kay
I don't know what is causing the sponginess. The car will stop fine but it is not as firm as I would like. I redid the bleeding from Right rear, left rear, right front, and left front and it is the same feel. So I suspect is it the master cylinder. Is there any way to fix it by keeping bleeding the brake lines or I have to remove the master cylinder and do a bench bleed again?
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Do it as someone explained above.
Use pressure bleeder and first just crack the connections on the M/C and bleed one at a time until no bubbles come out. You want to do this here rather than try and push those air bubbles all the way to the calipers.
Once you see no bubbles at M/C, then pressure flush/bleed to each caliper. Make sure the tube off the caliper is dipping into fluid in a clear pop bottle so you can see the bubbles.
I would buy 4L (a gallon) of fluid and flush 500cc or more from each caliper. This so you get the air from the M/C that is probably in your lines all the way to the bleeders.
No need to remove M/C!
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Graham
85 300D
,72 350SL, 98 E320, Outback 2.5