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'02 330CI 5MT
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18 Posts
What climate do you live in? It's Winter so this may be a problem with the CCV causing blow-by to go through valve cover gasket. Have you changed the CCV system before?
 

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Registered
'02 330CI 5MT
Joined
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18 Posts
Is the check valve installed backwards on your catch can system?

 

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Registered
'02 330CI 5MT
Joined
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18 Posts
Gotcha. I'm quite new to the e46 but just trying to dig into this and bounce some things off you or the other guru's on this forum. You mentioned you did a engine rebuild 3k miles ago- is there a change there's something going on with the camshaft gasket or ledge? Maybe something not torqued and it builds up pressure or fails at certain engine speeds?
 
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