Quote:
Originally Posted by Goatracer1
Under High vacuum the PCV is OPEN not closed no matter the rpm.
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Yes it’s not really ever completely closed, unless as Tom states it is under backfire, but under high vacuum it flows the least.
https://help.summitracing.com/app/an...cv-valve-do%3F
This is why at higher rpm cruise where vacuum and rpm is high, I had issues and why I went to a draft can in my situation.