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      01-01-2018, 05:50 PM   #7
ezaircon4jc
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Drives: 2019 540i M Sport
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Quote:
Originally Posted by Mugiwara View Post
If so, how can it be fixed?



This happens only with a cold start, but also happens during the summers, again during a "cold"-start.

Never had a problem with the coolant as far as I know, also the white smoke you mentioned; not that I know. How can condensation cause the sound as if there are misfirings in the cylinders? Where is the condensation? In the exhaust? In the cylinders itself?
Humidity is also a factor. I don't know about the sound (I didn't hear it) but condensation (you can also see it behind high altitude aircraft) is caused by the hot exhaust interacting with the cooler/colder outside air. Condensation doesn't happen until the exhaust hits the atmosphere.

Does this help??

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