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Can someone educate me to what how the PCV valve works and it's function?

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Evans Ward

Love those LC2/ Y56 cars!
Joined
May 24, 2001
Messages
2,060
Need the basics and 101 course on how the TR PCV valve works. I do know it's a check valve and that it only flows in one direction. I discovered mine was flowing both directions and noticed quite a bit of oil on the back of the intake. Chasing an oil leak so hoping this was it. I did have a correct NOS TR AC-Delco PCV valve to replace it. Educate me please! Thanks! :)
 
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