Jump to content

Server Lease Renewal/Software Licenses

Our yearly server lease, software licenses, as well as hardware operating costs, ARE due Dec 6th, 2021. Our current donations have fallen far short of the funds we need to renew. Please remember the RennTech.org community is Member supported so please consider a donation to help...  THANK YOU!

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)

Help - Bleeding brake fluid - How to know when new fluid is in the cal


Recommended Posts

Hi Folks,

Sorry for this newbie question.

When I put the power bleeder cap on and pump to 20psi, how do I know where my new brake fluid is at ? I mean, once you open the bleeder valve on the first caliper, when do you know that the new brake fluid has "arrived", and how do you make sure the old/new fluid is not mixing togother in the brake system ??

Thanks

Link to comment
Share on other sites

One easy way is to change colors every change, from ATE Superblue to Gold. That way is postive that the flow is there.

Otherwise, if you are changing from gold to gold, you will see the dirtier or darker fluid come out first, then the cleaner and clearer new one later.

Link to comment
Share on other sites

If you are not using a different color fluid, it will be very hard to see when all the old fluid is out. The fluid in the calipers which has gotten very hot may be a darker color but, if you are doing a full flush, you want to exchange all the fluid.

I make it simple for myself. I know that a one liter can is more than enough to do a full flush of the fluid, so I just flush the fluid into a similarly sized clear bottle and remove about a quarter of a liter from each caliper. I take a bit more from the rear calipers which are flushed first and have longer lines leading to them. But, as I say, a liter is more than enough so you don't need to be very precise.

Link to comment
Share on other sites

Old fluid typically has darker color as said. Sometimes, you'll see some bubble in the line as well. Typically, there isn't that much to be flushed out. A litre should have 1/4 left over so if you use a full litre, you're definitely flushing out all the fluid. As KevenC said, the rear ones need to bleed out more.

Link to comment
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.

Guest
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.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.