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Question: I have a 2000 328I. I've had a misfire on Cylinder 5 a few times. Cylinder has been switched, spark plugs and coil changed out. A year later my "Check Engine" is back on. Light goes on and off occasionally on the dash. Was off but still failed smog. Car runs smooth though. Mechanic says I need a new Vanos. Will replacing this fix the issue and help my car pass smog?
Yesterday I noticed gas gage is reading incorrectly also don't know if that's connected Please advise.
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