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X1 E84 (2011 - 2015)
First generation BMW X1 availbe as a X1 28i with either sDrive (RWD) or xDrive (AWD) or the US exclusive I6 N55 powered X1 35i xDrive.

View Poll Results: change the tensioner at 100k miles
Yes because it will help 2 100.00%
Yes yes and change guides and chain as well 0 0%
No because another part causes the failure 0 0%
No because it doesn't wear 0 0%
Voters: 2. You may not vote on this poll

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  #1  
Old 03-10-2019, 09:18 PM
wvadam wvadam is offline
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timing chain tensioner

Timing chain tensioner: is it worth replacing as preventative for high mileage N20?

I personally feel that the guides cheap thin plastic breaks and causes the chain to oscillate and cause the destruction. Is it possible to change the guides without a mechanics 12hrs of labor?


It also seems like the oilpump chain can fail first (in that case you hear the whine and have to replace everything anyways) so that is outside this discussion because the noise will tell you what to do.

Edit: Notice in the picture I do see broken guides but not broken chain. Has anyone seen otherwise?
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Last edited by wvadam; 03-10-2019 at 09:24 PM.
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  #2  
Old 03-11-2019, 08:26 AM
0w40X1 0w40X1 is offline
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If i SAW ANY TENSIONER PIECES, I'd put a new chain and guides

The chain could already be worn and or stretched.
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Old 03-11-2019, 09:21 AM
mreric mreric is offline
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there is a TSB from bmw that shows to replace these guides and chain for vehicle made before 03/2013 . i think if the vehicle is made before 03/2013 then is a good idea to do so
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Old 03-11-2019, 11:03 AM
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DBU DBU is offline
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I changed it at low mileage on my X4 with the N20 motor. Surely there is a reason why BMW has used at least three different models of this part. And I assume "newer is better." There are some visual differences and the spring on the latest version also seemed stronger. Anyway, here is a link to my DIY on the X4 forum.
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Old 03-11-2019, 11:22 AM
mreric mreric is offline
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thank you for the link, seem the tensioner seem to be an easy replacement . or you made it look easy !....

might consider it. seem to be cheap insurance.
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Old 03-11-2019, 05:18 PM
0w40X1 0w40X1 is offline
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Quote:
Originally Posted by mreric View Post
there is a TSB from bmw that shows to replace these guides and chain for vehicle made before 03/2013 . i think if the vehicle is made before 03/2013 then is a good idea to do so
So When the 2014's came out in about April 2013 they have new improved guide?

My 2014 X1 s28i was built approx may 23rd, 2013.
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