Poor return pressure from brakes
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Pretty sure that BMW says to NOT grease the guide pins. At least, on my car. If you are able to replicate the problem in the garage, remove the bleeder screw or the brake line when the brake is stuck. That will tell you if the problem exists in the caliper or further upstream.
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Originally Posted by tstiglich
Pretty sure that BMW says to NOT grease the guide pins. At least, on my car. If you are able to replicate the problem in the garage, remove the bleeder screw or the brake line when the brake is stuck. That will tell you if the problem exists in the caliper or further upstream.
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Yep, that is what I would do. If the brake fluid has not been done in over 2 years, chances are that water (moisture from the atmosphere) has entered the system and possibly corroded some parts of the system, such as the pistons on the calipers. Just a thought. I'll not get into the grease - no grease of pins controversy.
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Originally Posted by donpb
Let's all just agree to disagree. ![Smile](https://5series.net/forums/images/smilies/imported/smile.gif)
My mechanic says he never greases the pins. I don't do it. Some people swear by it. Just do what you feel is best for you.
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My mechanic says he never greases the pins. I don't do it. Some people swear by it. Just do what you feel is best for you.
On a serious note i know people who don't grease and are fine. I work on a lot of different model cars and greasing is required on some so I do it on all. A little grease never hurts anything.
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To reply about the brake fluid service. 2 years is not long. For it to have any effect on the system it takes years of neglect. I do my changes every 3 years and never have had a failure in my system. I do own an 07 accord that I bought in 06 that I needed to replace the rear calipers last November. I chopped it up to being a 15 year old car with I've 200k on the odometer. Who knows if I changed the fluid like I should of I probably could of squeezed a few more years out of it but I was planning to do a break system refresh anyway. Calipers and fluid is cheap when doing the work yourself.
I just believe there's something wrong with the OPs system fluid wise. A bleed would of been the first thing I would of done since all you need is fluid and time.
I just believe there's something wrong with the OPs system fluid wise. A bleed would of been the first thing I would of done since all you need is fluid and time.
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FormerE30Owner (01-13-2021)
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The following 2 users liked this post by donpb:
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