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Hi all, I'm new here, just got an AW 2012 1M with only 8000 km on it.
Started to misfire the other day and idling really rough. Pulled the DME code and it was cylinder 6 misfire.
Checked cyclinder 6 spark plug and it was fouled badly.
I've then replaced all 6 plugs with OEM Bosch and all coils with Delphi. Car is running fine now.
The injectors are still index 7 but from checking my MHD logs, they are still fine.
I guess on these cars age does play part, not just mileage. Could have been a bad coil or a bad spark plug but I replaced them all.
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