Man this is a dumb question but whats a PCV valve? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 09-16-2005, 07:13 PM   #1
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Default Man this is a dumb question but whats a PCV valve?

Sorry for such a dumb question that I should probably know the answer too but whats a PCV valve? People talk about changing it so I want to also. Im on a roll man.
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Old 09-16-2005, 07:43 PM   #2
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Postive Crankcase Ventalation
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Old 09-16-2005, 07:43 PM   #3
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Pressure control valve or Positive crankcase ventilation valve.

It allows whatever gases that may blow by the piston into the oil pan back into the intake tract to be reburnt. A sticky one can reduce MPG.
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Old 09-16-2005, 08:02 PM   #4
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and there are pics in here

http://www.bonnevilleclub.com/forum/...ht=pcv+picture

supercharged are in a way different place though
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Old 09-16-2005, 10:23 PM   #5
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Comfy, I just did mine a few months ago. Its an easy process, just make sure you tighten everything back up.
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Old 09-16-2005, 10:32 PM   #6
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remove it and shake it, if it rattles it'* good.
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Old 09-17-2005, 02:48 PM   #7
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where is it on a 92 SSEi?
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Old 09-17-2005, 06:36 PM   #8
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Quote:
Originally Posted by shortstuf212559
where is it on a 92 SSEi?
remove the engine cover... right in the middle, behind the supercharger.... little black square labeled "PCV"
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Old 09-17-2005, 07:13 PM   #9
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thanks Haro! im pickin the car up on friday, and am lookin forward to giving it a FULL tuneup!
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