ENGINE FAULT Ignition failure BMW E91 engine N43
#EngineFault #IgnitionFailure #Misfires #30A1 #DiagnosisMSD80 #BMWE91 #BMWN43

00:00 Intro
The engine fault light will come on and it would look
like the engine is only running on three cylinders!
30A1: DME, ignition coil, cylinder 2, activation
There is something wrong with the ignition!
Let's take a closer look at the ignition coil of the 2nd cylinder
01:51 Check the ignition coil connectors and lines
P_ZSZ2 line from DME to ignition coil
M_ZS line from ground to ignition coil
U_HR line from voltage suplier to ignition coil
03:46 Check ignition coil
Let's take a closer look at the ignition coil
from the 2nd cylinder
The metal cover of the ignition coil has rusted!
Testing to solve the problem with another used ignition coil
Delete fault codes
I'm testing whether replacing the ignition coil helped
It did not help! The engine still runs on 3 cylinders!
Same fault: 30A1
The lambda value indicates that BANK 2 (cylinders 2 and 3)
are running too lean!
Fuel injectors OPENING TIME is zero in cylinder 2!
Either the fuel injector is faulty or the DME does not activate it!
Before I go into more detail on the fuel injector;
i will test with another used ignition coil, as well as a spark plug
The spark plug appears to be in good condition externally
The problem has been solved!
The final solution was a faulty ignition coil
The spark plug was OK
Both of these ignition coils are defective!
Fault code 30A1 is lost!
The torment of eternity 30EA is and will remain!
Lambda values are okay!
The opening times of the fuel injectors are normal
The engine control module (DME) shut off the fuel injector from cylinder 2, because the ignition coil did not operate
This problem went away, but that 30EA haunts me ...
Contamination of the NOx Catalytic Converter has jumped out of range again: 3264mg!
I am not going to worry about that now. The main thing is that the car is fit to drive again!

Let’s continue with the next episode! Stay tuned!


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Watch whole BMW E91 with N43 Diagnosis & Maintenance SERIES from here:
   • BMW E91  Diagnosis and maintanence  

Also N43 MOTOR rebuild SERIES from here:
   • BMW E91 N43 MOTOR REBUILD [ REEDIT 2...  

Also POWERDRAIN rebuild SERIES of BMW E91 with engine N43!
See the whole SERIES from here:
   • BMW E91  DRIVETRAIN REBUILD series  


My purpose is to encourage people to do things themselves!
Plus, this is a nice hobby for myself and at the same time I have the opportunity to save a lot of money by doing all the maintenance myself!
I’m not a professional with cars or motorcycles, I just want to learn how to do things myself.
If you do this service yourself, always check the correct instructions in the official service manuals. This is just my way of doing it!

Jani Voutilainen

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References:
https://bimmerprofs.com/msd80diagnos...

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