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How to troubleshoot engine misfires?

I have a 2010 BMW 328i with 100k miles and the engine is misfiring. I've already changed the spark plugs and coils, but the problem persists. What else could be causing this issue and how can I fix it?

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One possible cause for engine misfires in a BMW is a faulty fuel injector. You may want to have your fuel injectors checked and possibly replaced. Also, check for any vacuum leaks in the intake system.

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