Hello guys, i have a problem with my 645Ci 2004, when i start car in the morning i have a rough idling, rpm going up and down engine shaking, and engine check light on, when i pull a gas sometimes, turn engine off and back on its ok, i have new spark plugs and coil pack. On diagnostic iam getting error mysfiring cylinders:
00274E - CDKMD - misfire detection, error sum
00272D - CDKRKAT2 - LR adaptation additive per time (bank 2)
00272C - CDKRKAT - LR adaptation additive per time
0027B8 - CDKPDDSS - plausibility differential pressure sensor
002772 - CDKTEVE - activation tank valveation valve
002746 - CDKMD04 - misfire detection cylinder 6
002749 - CDKMD07 - misfire detection cylinder 2
CDKMD03 - misfire detection cylinder 8
Sorry for my english, iam from Czech Republic
Last edited by michaelplch; 11-13-2020 at 05:15 PM.
Sounds like a vacuum leak. Performing a smoke test of the induction system can help, but it requires a special smoke machine and the proper adapters to perform it properly.
ASE and BMW Master Certified Technician
Yup
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