Injector Question(s) - N54Tech.com

Nikica · **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.

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Views: 168
Size: 7.5 KB

Nanometer · 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.

Nikica · 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.

Payam @ BMS · 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.

Nanometer · 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.

Nikica · 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 :]

Nanometer · 05-07-2018, 10:11 PM

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

NoQuarter · 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.

AZN54 · 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.