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      05-24-2022, 03:44 PM   #1
Lucasbmwowner
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N55 misfires (need help)

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- ME active codes
140002 - Combustion misfires, several cylinders:
Damaging exhaust gas after starting up.
140010 - Combustion misfires, several
cylinders: detected.
140102 - Combustion misfire, cylinder 1:
Damaging exhaust gas after starting up.
140110 - Combustion misfire, cylinder
1: detected.
140202 - Combustion misfire, cylinder 2:
Damaging exhaust gas after starting up.
140210 - Combustion misfire, cylinder
2: detected.
140302 - Combustion misfire, cylinder 3:
Damaging exhaust gas after starting up
140310 - Combustion misfire, cylinder
3: detected.
140602 - Combustion misfire, cylinder 6:
Damaging exhaust gas after starting up.
140610 - Combustion misfire, cylinder
6: detected.

I have a fbo 2016 bmw 435i xdrive grand coupe running MHD stage 2+. Been running it for a year now. Now won't go past 1500 rpm while driving without bogging out. Started when I past someone and white cloud of smoke came out the back. Car was sitting for 2 weeks while I was away and this happened on the 3rd day back driving it.
Changed spark plugs and coils please give me your thoughts!
Thanks
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      05-24-2022, 06:37 PM   #2
thejeremyman9
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How did the plugs look? Did you photo and compare them? Did you try flashing back to stock?
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      05-24-2022, 06:56 PM   #3
Lucasbmwowner
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I attached photos of the plugs, I didn't run the engine before changing the plugs though if that matters. Yeah I flashed back to stock. Do you think I have to drive it for a certain amount of time before it realizes and that the new plugs are in?
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      05-24-2022, 06:57 PM   #4
Lucasbmwowner
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Trying to attach photos
Attached Images
  
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      05-24-2022, 06:58 PM   #5
Lucasbmwowner
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Car has like 85000km catless downpipe, Dinnan intake, vrsf charge pipe and intercooler.
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      05-25-2022, 02:12 PM   #6
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So to confirm:

Issue happened --> new plugs and coils --> flashed backed to stock --> tried to drive and got the codes above?

If that wasnt the order, make sure you clear all codes and you can try resetting adaptations then drive again and see if they come back. White smoke implies coolant... but HG is unlikely. Is your coolant and oil levels OK?
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      05-25-2022, 03:48 PM   #7
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Issue happened --> got the codes when I got home not right away, no engine light—>cleared the codes—>new plugs and coils --> drove for a minute but still felt the same as before—> no codes came up—> flashed back to stock
Used the computer to Measured the oil said it was fine.
Coolant looked fine as-well
I just sent it to bmw so we will find out what it was when they look at it( also looked around the engine for any fluid or anything, found nothing out of the ordinary)
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      11-20-2023, 09:13 PM   #8
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Did you ever get it resolved?
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