[Ahmadbaudine92]

Hi guys i have been having problems with my 320i since i have purchased it a few months ago.

I have an engine light on with multiple error codes including missfire cylinder 2 and 3. The car is rough on idle and engine light starts to flash and the car shakes if left on idle for around 20 minutes.

To resolve it i have changed all spark plugs
cylinder 2 and 3 coil pack
i had an o2 sensor error code so i replaced that aswell
i did a full service,
i have replaced the petrol injectors with used onse from my mechanic off another n43 engine twice, the first time made no difference however, the next set of used injectors made a massive difference to the overall drive and power of my car however, after half anhour of enjoying the drive my dreaded engine light once again returned with the same missfire codes also returning.

i have been reccomended by my mechanic to replace all injectors with the new index 11 however, it will cost close to a grand for parts and labour.
I am willing to pay this if it solves my problem however, i am scared to pay all that money and still have the problem as i am only a student so it will be a big hit to my wallet.

Any advise will be much appriciated.