what's is a pcv and where is it???

[WICKEDGN]

Well since im a newbee what is a pcv valve and were is it located. can this affect your performance or what does this pcv valve doo??? thanx in advace guys

 

[Roc87]

Positive
Crankcase
Ventilation

It's underneath the plenum on the passenger side. Only replace with a Delco valve. It's open during vacuum, closed during boost.

 

[azgn]

well......you "hope" it is closed during boost.......

 

[dpok69]

What is the correct pcv valve for our cars. I think i have ac delco cv893c and i have oil in the intake.

Someone posted a GM part # 25095468. Are we supposed to be using this one?

 

[JToups386]

Applied Technologies sells a very nice replacement, that they manufacture themselves. Go to their website and read about it. It's only $20, and in all likelihood, you'll never have to replace it again. It functions the way a PCV is truly designed to function, and eliminates that "oil in the intake" problem. Go to this link.
http://www.atrperformance.com/catalog/02atr042.PDF

I've used 'em for years, with great results.