[Will_460cs]

Sold..




I have 4 working tested injectors following my N53 rebuild-lite.

These vary from index 3 -9 but most importantly do not leak when the engine is turned off and left to stand.

They have the decoupler rings and old seal still attached unto you if you want to remove.

£70ea delivered in the UK

If you need a new or decoupler seal I can supply a new one for £8ea as I bought extras when I was trouble shooting.

[Phil325i]

Will, not wanting to affect your sale in any way, but you'd probably be better off sticking these on eBay. Most members of this forum are well aware that if you're fitting injectors, index 11 is the way to go and that fitting secondhand ones tends to lead to ealry failure. Not to say someone with an injector issue wanting to get shot of their car wouldn't welcome them though... GLWS.

[Will_460cs]

No problem at all Phil, my reasoning is that a lot of people don't want to spend 1200£ on new injectors as Index 11 is a all or nothing, unless of course you have index 10 which is mixable.

This potentially gives someone a chance to fix there car for low money/risk, I will be eBaying them if no interest but I figured people may want to buy from a forum member before the pot luck of eBay as most people seem to sell these injectors without knowing if they are faulty.

[Roadrebel]

The guy on Bimmerprofs says you can mix injector numbers and he has run like that for years. He seems to know what he is talking about.

[Will_460cs]

Originally Posted by Will_460cs

No problem at all Phil, my reasoning is that a lot of people don't want to spend 1200£ on new injectors as Index 11 is a all or nothing, unless of course you have index 10 which is mixable.

This potentially gives someone a chance to fix there car for low money/risk, I will be eBaying them if no interest but I figured people may want to buy from a forum member before the pot luck of eBay as most people seem to sell these injectors without knowing if they are faulty.

This is from BMW documentation covering injector mixing;


IMPORTANT: Injectors with index 11 and higher have a different calibration and construction than injectors with index 10 and lower. Due to this difference, the injectors with index 11 and higher and injectors with index 10 and lower cannot be mixed on the same engine bank (i.e., cylinders 1-3 or 4-6). Once a bank of injectors is at index 11 or higher, the "bank set replacement" requirement no longer applies. For index 11 injector failures, only replace the failed injector

https://static.nhtsa.gov/odi/tsbs/20...29104-4598.pdf

[Will_460cs]

Originally Posted by Roadrebel

The guy on Bimmerprofs says you can mix injector numbers and he has run like that for years. He seems to know what he is talking about.

Bimmerprofs certainly do know what they are talking about, did you meet him in the pub when he told you?

[Will_460cs]

Originally Posted by Sayek

You can mix index 11 certainly with index 9
Owned my car 4 years and only replace single faulty injector with latest index 11.
I have replaced 3 so far with index 11 and last injector yet to replace is index 9.

Also hear you cant drive car without coding injectors..not true. I have coded 2 and 3rd not coded as my software was not working.

If you plan to keep the car for years ahead £160 buys a new injectors and not worry for next 50k miles.

Anyone looking for a cheap repair before they sell their car should be looking at these

BTW that document relates to different engine the N54. Those injectors are different and go upto index 12.

The N43/53 latest is 11.

The TIS for N53 is more stringent !- the injector model is the same for N53 except they have now have Index 12 for N54 only - the document was provided for reference for Injector BANK assignment and not mixing indexes with 11.

Im not saying it does't work, Im saying it not recommended and has some significant pitfalls - so much so that BMW wrote it down in their TSB based on advice from the injector manufacturer.

Additionally the point Phil was making earlier about injectors failing after changing one, relates to how these injectors work in banks under DME control, when they start to leak the other injectors try to work harder to deliver more fuel, that causes a stress point which often leads to multiple failures. Of course this doesn't happen all the time but its worth bearing in mind if the engines has been like dog for a while!

Perhaps that why you are replacing injectors one after the other?

Given this is a for sale post I'm happy to continue this on the Tech forum where I can show several reasons why it not a good idea to mix old and new injectors models i.e. mixing index 10& 11 with lower index.

[Will_460cs]

Originally Posted by Phil325i

Will, not wanting to affect your sale in any way, but you'd probably be better off sticking these on eBay. Most members of this forum are well aware that if you're fitting injectors, index 11 is the way to go and that fitting secondhand ones tends to lead to ealry failure. Not to say someone with an injector issue wanting to get shot of their car wouldn't welcome them though... GLWS.

Guess what after the last 2 posts it would seem not! I have explained why injectors can fail in sets as per your mention above. IMO this is because people live these car running rough for ages as there no warnings or EML or anything until the problem is really bad - that is my observation.

[Roadrebel]

Originally Posted by Will_460cs

Bimmerprofs certainly do know what they are talking about, did you meet him in the pub when he told you?

Not intending to threadjack at all. My number 4 injector is leaking so I need another one but it seems that I can't use one of yours because you say they all have to be the same.

[Will_460cs]

Originally Posted by Roadrebel

Not intending to threadjack at all. My number 4 injector is leaking so I need another one but it seems that I can't use one of yours because you say they all have to be the same.

Why are you not intending too? you have twice now! The first was a clear hijack and I'm sorry if my curt response plucked up your feathers.

Secondly, I didn't say you can't mix injectors I said you can't mix injectors with index 11 in bank and posted the relevant BMW documentation to support this - more for the people who care about doing things the right way rather than the cheapest way possible or what a lot of "specialists" have done to fix which has led to expensive further repairs.

3rd this is old news discussed many many times, look at the N54 Forum section of this forum on the US side, and before any chimes in - it shares the same fuel systems and injectors so is absolutely relevant.

In summary there no point in spending £200 x X on a index 11 injector to mix in set of old injectors, potentially destroying the index 11 prematurely and having to fix again or continually having a an engine that isn't running well (unless of course you don't care about these things!), particularly if you can't do the work yourself and you're paying for some to fit individual injectors.

However the logic is infinitely more appropriate to use a known good injector in a existing bank with a failed injector(s) as the financial risk is substantially lower. Thus providing a cheaper solution for some one that doesn't have or want to spend £1200+ on replacing the whole lot.
Of course there are no guarantees, and in your case I see you have misfires for a long time which isn't going to be good news for the remaining injectors.

Is that easy enough to grasp? Any questions?

[Will_460cs]

SOLD

[surrey130i]

Does anyone have a good available N53 injector pre index 11? I need one for my car which is running older index and need to source one good working N53 pre 11. thanks.