Re: 2005 9-5 PCV - Check for vacuum At the Hose Plus - Saab 9-5 Bulletin Board - Saabnet.com
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Re: 2005 9-5 PCV - Check for vacuum At the Hose Plus
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Posted by FredKolb12 [Email] (#46) [Profile/Gallery] (more from FredKolb12) on Sat, 31 Jul 2021 10:37:35 Share Post by Email
In Reply to: 2005 9-5 PCV Pressure Help, Justin, Thu, 29 Jul 2021 09:52:58
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I don't have the I-4 engine, but the MY2000 V6 (B308E). My PCV problem was solved with both a new check valve AND using a 2mm drill bit to ensure the vacuum nipple opening on the oil separator was not blocked. But, don't make the hole any larger than they designed it. On the V6, 2mm is all it needs. My oil leaks from pressure all disappeared after that.

There was a mod 6 type PCV system retrofitted to some years. Do you know if 1) you are supposed to have it; 2) was it actually installed?

Also trace the vacuum lines to see where they go after the oil separator. Take a vacuum reading there also to ensure you don't have leaks or the main crankcase connection could be blocked with sludge. If you have never replaced the vacuum lines before on this car (actually you would not have since it's new to you) or the previous owner did not, there could be splits at the ends of hoses due to heat and age that are losing vacuum. You won't see them without removing each one and visually inspecting the end. I replaced all my rubber lines with blue silicone. Silicone handles heat better and looks good too.

->Posting last edited on Sat, 31 Jul 2021 10:41:49.

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The more details you learn about your Saab, the more interesting it becomes. 

Fred

2000 9-5 SE 3.0L V6
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