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E90/E91/E92/E93 (2006 - 2013)
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  #1  
Old 05-18-2013, 11:36 AM
ants ants is offline
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Location: South Africa
 
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Mein Auto: BMW 320i E90 2007
Unhappy Timing chain issues

Hi. I need some advice on the timing chain rattle I have picked up on my 320i.
I was advised to change the chain tensioner, which I did, the rattle went away for about 2 weeks and came back. Now they tell me I must have the cams/chain/guides changed as well. I cannot afford to do all that now. Do I genuinely have to change the cams, can I get away with just changing the guides and chain.

Thanks.
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  #2  
Old 05-18-2013, 11:40 AM
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tturedraider tturedraider is offline
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The vast majority of users here are in the U.S. and we don't get the 320, so we may not be of much use to you.
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  #3  
Old 05-18-2013, 11:44 AM
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CALWATERBOY CALWATERBOY is offline
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Quote:
Originally Posted by tturedraider View Post
The vast majority of users here are in the U.S. and we don't get the 320, so we may not be of much use to you.

That's true, but, OP, principles apply.

Sounds like your mech's shotgunning the issue hoping for a solution; unable to ID the cause.

Ask him to show you exactly why each part need replacement. Betcha 'deer in headlights' returned.

Dang customers. Asking questions? Who told 'em to do that?


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Indy or dealer?
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  #4  
Old 05-19-2013, 09:42 PM
sptt144 sptt144 is online now
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Mein Auto: 2009 335i
I had to replace the chain guides in my Altima SEr recently. What had happened was the chain guides broke and slid down allowing the tensioner to push all the way in but not on the guide and the rattle would only go away when there was enough oil flowing. I did not change any cams but just did the waterpump (which was sealed and on the inside), guides, tensioner, and seals. Runs like a champ but I did it myself and it was pretty darn hairy and scary to do a FWD V-6 with no room. I have no idea how the BMW would be to do but if you do a parts search for the chain guides and find they're plastic with a hook on the top side, it's a good bet something similar happened. You just don't know until you get in there and see if any damage was done. But as long as the chain is still circulating and hasn't broke, you're probably OK!

Edit:
Also, just found this...may just need an "upgraded tensionser". I'd try that first:

http://www.pelicanparts.com/bmw/tech...er-Upgrade.htm

Last edited by sptt144; 05-19-2013 at 09:51 PM.
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  #5  
Old 05-19-2013, 10:55 PM
sptt144 sptt144 is online now
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...Spent some more time researching and Pelican Parts has some detailed instructions and pictures for this engine/issue. Do a search for BMW 320i Tensioner Repair Pelican Parts, or Project 13 Pelican Parts. Should get you there one way or another.

Steve
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Old 05-20-2013, 12:55 AM
ants ants is offline
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Location: South Africa
 
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Mein Auto: BMW 320i E90 2007
timing chain

Hi thank you very much for your advice. I will be opening it up this week. Will keep you guy's posted. I will check the pelican site. Thanks again.
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  #7  
Old 05-20-2013, 01:14 AM
ants ants is offline
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Location: South Africa
 
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Mein Auto: BMW 320i E90 2007
I have changed the chain tensioner to the new one. The noise went away for about three weeks, then came back but not so loud anymore.
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