PCV replacement - 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 03-27-2007, 11:00 PM   #1
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Default PCV replacement

I replaced the PCV valve on my 97 ssei today. I took off the little cover on top of the charger and took out the spring and pulled out the valve with a needle nose pliers came right out. My question is I keep reading about an Oring I didnt see any Oring just took it out put it back in. Did I miss something?
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Old 03-27-2007, 11:03 PM   #2
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The oring was probably stuck down in the hole. Take another look. There should be one.
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Old 03-27-2007, 11:04 PM   #3
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IIRC, the o-ring goes around the bottom end of the PCV valve and sits under the 'bulge' on the PCV. It could be down in there because it fell off the valve.
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Old 03-27-2007, 11:07 PM   #4
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so I could just stick my finger in there or a little pick tool and get it out. From what I read if the valve isnt sealing I should get a strong vacuum from the oil fill, right.
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Old 03-28-2007, 07:40 AM   #5
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Either that or a whistling noise right before the shift when you are on it hard.
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Old 03-28-2007, 10:31 AM   #6
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Ok thanks a lot fellas. I appriciate the help.
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