New injectors?

R.E92 said:
Nanu said:
I have had new injectors fitted recently and the ones that failed were as fitted to the car when new. They were revision 12 surprisingly. So whatever the problem was, they haven't fixed it yet
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I've not heard of anyone having failed index 11 or 12 injectors, it's certainly a lot rarer.

If you have photos of the old injectors you can check if they are the first or second version of the index 12 injectors. The updated version have an etching in the metal part at the top of the injector and that supposedly shows that they have an upgraded thermal oil inside.
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Will have a look as I did keep the replaced injectors. Do you know what the etching actually is?
 
Nanu said:
R.E92 said:
Nanu said:
I have had new injectors fitted recently and the ones that failed were as fitted to the car when new. They were revision 12 surprisingly. So whatever the problem was, they haven't fixed it yet
Click to expand...

I've not heard of anyone having failed index 11 or 12 injectors, it's certainly a lot rarer.

If you have photos of the old injectors you can check if they are the first or second version of the index 12 injectors. The updated version have an etching in the metal part at the top of the injector and that supposedly shows that they have an upgraded thermal oil inside.
Click to expand...
Will have a look as I did keep the replaced injectors. Do you know what the etching actually is?
Click to expand...

It's a couple of letters stamped into the metal, almost like braille. I don't know what it means other than it's the only method of differentiating between the first batch of index 12 and the latter versions.

Here's a website that explains the situation a little better: https://blog.fcpeuro.com/difference-between-direct-fuel-injector-13538648937-and-13538616079
The article mentions that BMW started selling the cheaper injectors again but that has since stopped as of January.
 
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