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Old 1 Sep 2007
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rear brake goes empty sometimes

the rear brake of my f650 GS (2000) sometimes goes empty, I mean, when I psuh it, it goes all the way down with no reaction at all. But after pumping a few times, it comes back to life again and this story rapeats all and all. what should I do? thanks.
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Old 1 Sep 2007
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You have air in the system, it needs bleeding. If you don't know how to do this, take it to a garage/friend/mechanic and get them to do it, and watch them so that you will be able to do it yourself in future

Trophymick

Also check for fluid leaks.

Last edited by trophymick; 1 Sep 2007 at 15:33. Reason: To add info
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Old 2 Sep 2007
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should I look for a "pro" anyway ?

Quote:
Originally Posted by trophymick View Post
You have air in the system, it needs bleeding. If you don't know how to do this, take it to a garage/friend/mechanic and get them to do it, and watch them so that you will be able to do it yourself in future

Trophymick

Also check for fluid leaks.

thanks for your kind advise, trophymick.
I also was guessing air bubbling because, this is condition is almost always appering when going down winding slopes; no problem otherwise. The bad condition of the brake fluid was the secongd guess; 'cause I didn't change it since I bought the bike some 3000 km ago. For there is no leaks as far as I can see, it's better be air or bad brake fluid - there wouldn't be much trouble. In fact, I would try to bleed all the fluid out and fill it back again (with dot4 ), then pump all the bubbles away, by myself, as I did before on a Kawa.kle500 ....but, nothing in the back seemed to be the same. so I just walked in some woekshop and asked some mechanic directly this wild question : "where is the bleeding valve of my BMW; it is just the same make like that red one stands there, before your shop?" . And,he politely grunted me to bring it in and not to try doing anything myself. wise enough, so, think I'll do that way. thanks again.

Last edited by endurin; 2 Sep 2007 at 08:50.
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