Quote:
Originally Posted by mrbmwx5
The whistling noise ....Sound like you have intake leak, check your intake boot it may have crack or small leak.
Tapping noise ... Sound like cams seal issue.
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wouldn't this throw a code mmediately? I am driving it for a month already and there is no codes whatsoever. I've also recently "listened to" a friend's bmw 740 which has a similar tapping noise after removing oil cap, but no whistling...