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Went back to BMW last week with EML on again but car driving normally. Got told it was a blocked cat again, sorted under warranty. Got in it this morning, really bad vibrating at idle straight away and EML flashing amber. Managed to get BMW Assist out this afternoon who detected a misfire and faulty coil on cylinder 4. Changed it on the spot and car running like a dream again. Was going through my paperwork when I noticed what I thought was the last coil change, also on cylinder four, was actually just the injector they replaced.
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