Spongy breaks after new calipers and bleed

Recommended Posts

Hi guys, investigated my brakes the other day and found the piston seals to be broken and leaking. Ordered new calipers, I flushed the old brake fluid for new before fitting new calipers then bled once more once the calipers were fitted (with new pads) how ever they were still spongy. Looks like it has a new master cylinder too. Abs pump also looks new (can't guarantee) 

The order which I flushed was n/s rear o/s rear n/s front o/s front, abs pump. I didn't pump the break with abs tho and nothing came out. Felt unsure so repeated the process again without doing abs pump. Changed calipers and done it again, again without abs pump. 

What have I done wrong?

Share this post

Link to post
Share on other sites

Don't know if this is relevant but happened in my MB E Class. I would also get a BAS error indicating a BAS booster error. The pedal would sink and require a double press. I think some air was stuck in the booster. Went on for a while and then settled.

I can't help but feel that the initial bleed with a leaking system has probably contributed to it, although looks like the system has had its share and more of issues. You could give it a while and keep pumping the pedal to see if it settles.

Best of luck.

Share this post

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.