N53 E92 325i 2010

Lala96 · 10-13-2020, 02:27 PM

Hi! i'm in desperate need of help.
My car is experiencing misfires during acceleration.
The car is otherwise driving well, i'm not experiencing rough idle or engine light.
The injectors were changed last year at 51k miles. Car atm is 62k miles.
I've read a lot of forums, but i'm yet to come across one with no fault codes.
I took it to the dealership and the mechanic told me it seemed like valve cover gasket leak into the ignition coils and plugs. He however said "that's where i'd start (atleast)", didn't sound too convincing considering the hefty repair costs. I keep thinking about what if it turns out to be those injectors again, wouldn't be fun on top of those repairs.
Any help is appreciated,
thanks in advance!

4foothill · 10-13-2020, 03:46 PM

Have you got INPA and/or ISTA? N53 has a pretty extensive diagnostic capabilities so if you get to grips with that you'll save yourself a lot of time and money. It could also be a number of things but that does sound likely - oil getting into the coils would end their life prematurely and ~50k is about the end of their life anyway.

Change the coils and plugs is easy so you can try that yourself, obviously clean any oil before pulling the plugs. Then if the car drives well you'll know if it's worth doing the valve cover gasket. That's also DIY'able if you have the patience.

mxtm · 10-13-2020, 06:02 PM

Quote:

Originally Posted by Lala96

Hi! i'm in desperate need of help.
My car is experiencing misfires during acceleration.
The car is otherwise driving well, i'm not experiencing rough idle or engine light.
The injectors were changed last year at 51k miles. Car atm is 62k miles.
I've read a lot of forums, but i'm yet to come across one with no fault codes.
I took it to the dealership and the mechanic told me it seemed like valve cover gasket leak into the ignition coils and plugs. He however said "that's where i'd start (atleast)", didn't sound too convincing considering the hefty repair costs. I keep thinking about what if it turns out to be those injectors again, wouldn't be fun on top of those repairs.
Any help is appreciated,
thanks in advance!

I had a similar issue on my N54 with no saved fault codes and the car going in to limp mode (the half filled engine icon showing on the instrument cluster display) and it was coils and plugs. Dealer did it for almost $2k. Wish I did it myself.

Lala96 · 10-21-2020, 03:15 AM

First of all, sorry for not responding.
I was away for a few days, but I thought I should post an update.
Your inputs were much appreciated!
The issue seems to have been fixed after cleaning the apparent oil leak, changing the valve cover gasket and spark plugs. The car is no longer misfiring and is running a lot better. Finger crossed that it's the proper solution.

10-13-2020, 02:27 PM	#1
Lala96 Registered 0 Rep 3 Posts Drives: E92 325i -2010 Join Date: Aug 2020 Location: Sweden iTrader: (0)	N53 E92 325i 2010 Hi! i'm in desperate need of help. My car is experiencing misfires during acceleration. The car is otherwise driving well, i'm not experiencing rough idle or engine light. The injectors were changed last year at 51k miles. Car atm is 62k miles. I've read a lot of forums, but i'm yet to come across one with no fault codes. I took it to the dealership and the mechanic told me it seemed like valve cover gasket leak into the ignition coils and plugs. He however said "that's where i'd start (atleast)", didn't sound too convincing considering the hefty repair costs. I keep thinking about what if it turns out to be those injectors again, wouldn't be fun on top of those repairs. Any help is appreciated, thanks in advance!
	Appreciate 0 Tweet Quote

10-13-2020, 03:46 PM	#2
4foothill Private First Class 31 Rep 131 Posts Drives: E90 325i LCI Join Date: Jun 2016 Location: Manchester iTrader: (0)	Have you got INPA and/or ISTA? N53 has a pretty extensive diagnostic capabilities so if you get to grips with that you'll save yourself a lot of time and money. It could also be a number of things but that does sound likely - oil getting into the coils would end their life prematurely and ~50k is about the end of their life anyway. Change the coils and plugs is easy so you can try that yourself, obviously clean any oil before pulling the plugs. Then if the car drives well you'll know if it's worth doing the valve cover gasket. That's also DIY'able if you have the patience.
	Appreciate 1 Lala960.00 Quote

10-21-2020, 03:15 AM	#4
Lala96 Registered 0 Rep 3 Posts Drives: E92 325i -2010 Join Date: Aug 2020 Location: Sweden iTrader: (0)	First of all, sorry for not responding. I was away for a few days, but I thought I should post an update. Your inputs were much appreciated! The issue seems to have been fixed after cleaning the apparent oil leak, changing the valve cover gasket and spark plugs. The car is no longer misfiring and is running a lot better. Finger crossed that it's the proper solution.
	Appreciate 0 Quote