Motorraum: Ticking noise bmw 760 lia e66

[Angelus669]

Hi everybody,

First of all, i'm sorry i don't speak german (i'm french), that why my post will be in english. I've an issue with my bmw 760LIA and i don't find a solution.

Some weeks ago, i had a misfire on cylinder 8 and in the sametime, a ticking noise appear on the drive side bank.

I took my car to the dealer, i decided to change all spark plug and all ignition coil - - > result misfire still present and ticking noise too


But the problem is that, i still have the strange ticking noise, moreover, this noise appear only when the motor is at operation temperature (warm).
When this noise appear, i have some sputter on my exhaust and when i'm driving, i have some hole in acceleration, it's very boring !


I don't have issue when the car is cold !
Do you have any idea of my issue because i don't know what to do

Please find below the ticking noise on the video :

 https://youtu.be/Jf_Vd3p_6RQ

The error code on the soft diag is :

274B : Misfire detection cyl 8
274E Misfire detection, Checksum failure

I don't understand why i have this issue only when the engine is at warm temperature.