How long do n54 fuel injectors last?

_N54 · 07-12-2021, 09:05 AM

I have index 12's and I'm not sure how long they been on the car for, but they're leaking or at least a few so i ordered 6 new index 12's over the weekend. I think when my car sat at a shop for over 2 months with E85 it ruined the internals of the injectors causing it to leak.

Benjiman · 07-14-2021, 03:09 PM

I have five Index 9 one Index 7, at least one 9 is leaking. Going to replace with 12's. Not sure how long they have been in the car as only owned it a few months.

feuer · 07-14-2021, 08:15 PM

Mileage or time won’t give any idea. What matters is how engine was utilized and maintained.

07-12-2021, 09:05 AM	#45
_N54 Captain 300 Rep 884 Posts Drives: 335d Join Date: Mar 2020 Location: USA iTrader: (0)	I have index 12's and I'm not sure how long they been on the car for, but they're leaking or at least a few so i ordered 6 new index 12's over the weekend. I think when my car sat at a shop for over 2 months with E85 it ruined the internals of the injectors causing it to leak. __________________ 2013 335is - sold 2011 335d
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07-14-2021, 03:09 PM	#46
Benjiman New Member 3 Rep 29 Posts Drives: E93 335i Join Date: Jul 2021 Location: London iTrader: (0) Garage List 2009 E93 335i [0.00]	I have five Index 9 one Index 7, at least one 9 is leaking. Going to replace with 12's. Not sure how long they have been in the car as only owned it a few months.
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07-14-2021, 08:15 PM	#47
feuer Major General 4276 Rep 9,206 Posts Drives: wife crazy! Join Date: Apr 2015 Location: Chicago, IL iTrader: (5)	Mileage or time won’t give any idea. What matters is how engine was utilized and maintained.
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