GTB Performance
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Decoupling Element for Injector: One-time Use Only?

Thread Tools Search this Thread
      03-30-2013, 06:24 PM   #1
Drives: 335i
Join Date: Feb 2013
Location: Austin, TX

Posts: 60
iTrader: (0)

Decoupling Element for Injector: One-time Use Only?

Going to do an injector swap. Can I just swap over the old decoupling element to the new injector?

Note: I am not talking about the Teflon seal. I'm talking about this part: 13537564751

minivan is offline  
Reply With Quote
      03-30-2013, 06:41 PM   #2
Lieutenant Colonel
Drives: Black BMW 335i coupe
Join Date: Mar 2007
Location: USA

Posts: 1,884
iTrader: (0)

BMW says they are 1-time use. Might be able to get away reusing it if it isn't too old. I have some fall apart from the heat when I took them off though.
Legal Disclaimer: Anything I or anyone else says about my vehicle on this website(e90post.com or any affiliated or nonaffiliated sites), pertaining to modifications, is only to gain acceptance from my/our peers, and does not actually represent anything actually existing on my car, and thus, cannot be held against me in any issues, i.e. warranty claims, that may arise.
GeorgiaTech335coupe is offline  
Reply With Quote
      03-30-2013, 09:13 PM   #3
akotten's Avatar
Drives: 2007 335xi
Join Date: Mar 2011
Location: Rapid City, SD

Posts: 1,037
iTrader: (2)

Definitely replace it. I just had an injector go bad and in the process, they found another injector to be leaking compression. The tech thinks at some point they were removed and reinstalled without replacing the decoupling element. As a result, the injector oscillated in the head as it leaked and has nearly ruined the tolerance required to seal. They might need to replace my entire head because of this!
TC Kline S/A | Vorshlag Camber Plates | ///M Bushings & ARB | CP-e DPs | VRSF FMIC | Procede 2.5 w/ OpenFlash | DCI |
akotten is offline  
Reply With Quote
      03-30-2013, 09:44 PM   #4
GAM's Avatar
Drives: 2011 E92 M3
Join Date: Mar 2012
Location: Palm Beach

Posts: 466
iTrader: (1)

I Changed one of my injectors (cylinder 3) and reused the decoupling element and didn't have any issue, no leak, nothing, that was a year ago. If yours looks good you should be able to reuse it. However if you don't use a decoupling element you will get misfires.
GAM is offline  
Reply With Quote
      03-30-2013, 09:49 PM   #5
Drives: X1, 335i
Join Date: Sep 2006
Location: SF Bay, CA

Posts: 17,616
iTrader: (0)

Replace it
shiv@vishnu is offline   United_States
Reply With Quote


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

All times are GMT -5. The time now is 11:20 PM.

Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST