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#12 |
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Senior Member
Join Date: May 2010
Posts: 2,272
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A valve-only PCV system is ineffective at or near WOT, when mainfold vacuum is lowest and blowby is greatest. Thus, an additional PCV system should be used to vent the crankcase to the air filter cannister, where intake vacuum is greatest at WOT.
Jack E/NJ |
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