N54Tech.com - International Turbo Racing Discussion
(#1)
Old
Nikica Nikica is offline
Junior Member
 
Posts: 33
Join Date: Apr 2016
Car: 135i
Default Injector Question(s) - 05-07-2018, 01:13 PM

Hey guys! Just replaced my injector yesterday and I have a few questions. The first time I pulled my injectors out they were so hard to pull out because they were seated in the cylinder for so long. (This was a week ago). After I put them back in I noticed they were pretty loose while they were seated. I let my car run for 30 minutes and just watched and made sure they were ok.

When I went to go put the new injector in yesterday I noticed the clip that holds down both injectors was broken on one end. I also noticed all the clips were slightly bent upwards from the pressure of cylinders pushing up on the injectors. Should these clips be replaced when replacing the injectors? Is this really the best way to hold down the injectors? Each cylinder has a lot of PSI trying to come through..

My car is driving find and has 0 issues. It just doesn't make sense how much play there is in the injectors and how fragile the clips are that hold down the injectors.

Name:  3nUiYHPD.png
Views: 168
Size:  7.5 KB
Reply With Quote
(#2)
Old
Nanometer Nanometer is offline
Senior Member
 
Posts: 609
Join Date: Jan 2014
Car: 335i, 2009
Default 05-07-2018, 01:30 PM

Should the clips be replaced? I don't see why they should, but it certainly doesnt hurt to replace them. I'm still using my original ones. If it's broke, then of course you should replace it. Are you asking if there's a better way to hold the injectors in? What are you suggesting to do instead? The clip you show is made of spring steel. It will not bend due to the cylinder pressure. You probably installed it backwards. The spring clip should be applying force holding the injectors in. The clips are not fragile, it's it's broken you have a defective one.


M3 F80 2017 Competition & Carbon Brakes
JB4 ||| H&R Sport Springs

X5 50i 2013 ///M Sport
BMS Stage 1

Reply With Quote
(#3)
Old
Nikica Nikica is offline
Junior Member
 
Posts: 33
Join Date: Apr 2016
Car: 135i
Default 05-07-2018, 02:38 PM

Yes, I already changed the broken clip with a new one. I'm only asking because I've been reading a lot of forums and threads regarding our injectors. Seems to be that there's a lot of people complaining about how the injectors are seated. A lot of n54 threads on people using two decoupling rings and teflon to secure the injectors.
Reply With Quote
(#4)
Old
Payam @ BMS's Avatar
Payam @ BMS Payam @ BMS is offline
Super Moderator
 
Posts: 6,167
Join Date: Oct 2013
Car: e90 335i
Default 05-07-2018, 03:21 PM

Quote:
Originally Posted by Nikica
Yes, I already changed the broken clip with a new one. I'm only asking because I've been reading a lot of forums and threads regarding our injectors. Seems to be that there's a lot of people complaining about how the injectors are seated. A lot of n54 threads on people using two decoupling rings and teflon to secure the injectors.
That should never be the case, no teflon ever. A new injector seal and decoupling element is mandatory when doing injectors only one of each as well.


Burger Motorsports
Home of the Worlds fastest N20s, N54s, N55s, S55s, N63s, and S63s!

It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
Reply With Quote
(#5)
Old
Nanometer Nanometer is offline
Senior Member
 
Posts: 609
Join Date: Jan 2014
Car: 335i, 2009
Default 05-07-2018, 03:38 PM

I've never seen anyone complain about how they are held in place. Nor have I heard of or encountered anyone that has experienced a problem. Two elements are not needed, and quite frankly a problem probably waiting to happen. If two elements were better then BMW would have made a thicker element. The fact is that people are running single large turbos running stock setup for injectors.


M3 F80 2017 Competition & Carbon Brakes
JB4 ||| H&R Sport Springs

X5 50i 2013 ///M Sport
BMS Stage 1

Reply With Quote
(#6)
Old
Nikica Nikica is offline
Junior Member
 
Posts: 33
Join Date: Apr 2016
Car: 135i
Default 05-07-2018, 10:06 PM

I'm just repeating what Ive seen a lot online. I did purchase a new decoupling ring when I swapped the injector. When I got home from work today I flipped the clip that holds both injectors down, and BAM! It's perfect. It's seated perfectly snug with no play whatsoever.

Thanks for the input :]
Reply With Quote
(#7)
Old
Nanometer Nanometer is offline
Senior Member
 
Posts: 609
Join Date: Jan 2014
Car: 335i, 2009
Default 05-07-2018, 10:11 PM

I suspected you installed it backwards, probably not an uncommon mistake. Glad you got it fixed.


M3 F80 2017 Competition & Carbon Brakes
JB4 ||| H&R Sport Springs

X5 50i 2013 ///M Sport
BMS Stage 1

Reply With Quote
(#8)
Old
NoQuarter NoQuarter is offline
Junior Member
 
Posts: 72
Join Date: Jul 2012
Car: 2008 535xi
Default 05-08-2018, 07:35 AM

Quote:
Originally Posted by Nikica
I'm just repeating what Ive seen a lot online. I did purchase a new decoupling ring when I swapped the injector. When I got home from work today I flipped the clip that holds both injectors down, and BAM! It's perfect. It's seated perfectly snug with no play whatsoever.

Thanks for the input :]
You keep insisting you see this a LOT online and make it sound like an epidemic of injectors shooting themselves out. All I can respond with is ... I have no idea what you are reading. I can name some specific scenarios that match what you are talking about but certainly not a systemic issue.
Reply With Quote
(#9)
Old
AZN54 AZN54 is offline
Junior Member
 
Posts: 223
Join Date: Oct 2015
Car: N54 135i
Default 05-08-2018, 08:54 AM

Quote:
Originally Posted by Nikica
I'm just repeating what Ive seen a lot online. I did purchase a new decoupling ring when I swapped the injector. When I got home from work today I flipped the clip that holds both injectors down, and BAM! It's perfect. It's seated perfectly snug with no play whatsoever.

Thanks for the input :]

Count your lucky stars you flipped the clip before you had a fire issue. I've seen this before and the injector was leaking all over the valve cover. There are several DIY's out there on how to swap injectors for this motor; most of which provide the correct orientation of the clip. Also, aside form replacing the decoupler, it is even more necessary to replace the small seal towards the tip of the injector.

https://www.ecstuning.com/b-genuine-...xoCGEUQAvD_BwE

Don't forget to code in the new ones.


2009 135i
DOC Race 6266 Single, VS DW400 LPFP, VRSF Race FMIC, Motiv BoostBox, Tuned by Wedge

Offering Arizona Walnut Blasting Service:
http://www.n54tech.com/forums/showthread.php?t=36741
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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




vBulletin Skin developed by: vBStyles.com
Copyright 2007 - 2020, N54tech.com