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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > All-Wheel-Drive (Xi / xDrive) Talk > Common CV boot problems



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      07-15-2009, 04:22 PM   #1
bmystic
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Common CV boot problems

330xi 06. Does anyone had problem with there cv boot going bad?
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      07-15-2009, 04:28 PM   #2
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I may have a leak. not sure yet. That bronze looking collar is loaded with an oily substance. May be CV seal leak.

Car won't go in until 7/28
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      07-16-2009, 07:35 AM   #3
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I think its suppose to be greese up, to prevent it from going bad. Correct me if im wrong.
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      07-16-2009, 07:50 AM   #4
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I think its suppose to be greese up, to prevent it from going bad. Correct me if im wrong.
yes the cv boot is supposed to be filled with a special grease. over time the boot dryrots and the grease begins to come out, the biggest cause of the joint going bad is not lack of grease, but the dirt getting into the boot.
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      07-16-2009, 07:52 AM   #5
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I may have a leak. not sure yet. That bronze looking collar is loaded with an oily substance. May be CV seal leak.

Car won't go in until 7/28
is that collar oily? it looks to me like condensation from the a/c system, if its not oily its just the water dripping from the ac system sweating and is rusting that collar
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      07-16-2009, 11:44 AM   #6
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yes the cv boot is supposed to be filled with a special grease. over time the boot dryrots and the grease begins to come out, the biggest cause of the joint going bad is not lack of grease, but the dirt getting into the boot.
Whats the best way to prevent the boot from dryroting?
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      07-16-2009, 11:47 AM   #7
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Whats the best way to prevent the boot from dryroting?
nothing really, i guess if you wanted to be real anal about it you could try like armor all or something on it. the problem is the rubber is subjected to the engine heat, anything that leaks from the car (oil, antifreeze, gas) and also exposed to those from the road, and salt. they normally last a long time without any treatment
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      07-16-2009, 01:24 PM   #8
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Quote:
Originally Posted by sexye92 View Post
is that collar oily? it looks to me like condensation from the a/c system, if its not oily its just the water dripping from the ac system sweating and is rusting that collar

Yep, collar is oily. The opposite side is not. Watched an oil line grow on the collar over a two week period. Now it's covered. Not sure of source. Going to get it checked out in a couple weeks. Long wait for loaner
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      07-22-2013, 05:42 PM   #9
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My CV boot just went out.. I guess it's common with 330xi's. Anybody have more info on this? Bumped because don't think I should start a new thread for this.
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      08-10-2013, 12:17 PM   #10
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My CV boot just started making some funny noises when i turn slowly. At least i think thats what it is. I havent had a chance to take a look at it yet.
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      11-20-2013, 11:48 PM   #11
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