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      02-12-2019, 03:27 AM   #41
Mircea
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Drives: 325i E92 N53 M-Sport
Join Date: Jan 2019
Location: London

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Quote:
Originally Posted by Fritzer View Post
My bad! Just read the original post before I replied! Could be injectors, definitely something with the head though, or fuel system. Can't think of anything else that it could be. You are getting the same exact codes before you replaced all the other items? I wonder if it's something to do with the valves, I know that sometimes the cams can wear down and improperly depress the valves from opening/closing. Not sure if that would cause misfires or not.

Hopefully it's not something inside the block, I doubt it would be. Worse case scenario find a used head, I believe for N51/N52 they cost around $750-$1,000 USD. Don't quote me on that though, I feel like I got that figure from a salvager or something.
It's an N53 but the price sounds about right.
I'll replace the injectors as they are most likely the cause given the symptoms, especially the strong petrol smell when starting cold when the idle is at its roughest.
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