There is no CEL but would codes be thrown up anyway? I didn't realize that was a thing.....I suppose I should have.
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Originally Posted by Finnegan
Bad coil and misfires? I'm not sure if there such a thing as a lazy coil, but you could certainly get some vibration with a semi-functioning coil, corroded plug, moisture,etc.
I know it's going to sound typical, but if you tried using a BMW code reader or knock off (eBay)? There might be some fault codes that you could read, and most of these allow you to read data in real-time which allow you to get a better glimpse of what's going on with the engine.
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