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      03-16-2018, 10:12 AM   #107
gjm120
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Drives: 2013 128i, 2021 230i
Join Date: Jan 2016
Location: East Texas

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My apologies if this is covered in this thread...

Be absolutely sure the oil fill cap is tight. Mine makes a click when fully on.

I did my first oil change since being out of warranty and the car ran very bad after. Lumpy idling, reving up in idle and misfires. SES light came on and the car threw about 10 codes related to misfires. I found I hadn't put the cap on completely. This essentially created a vacuum leak.
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