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  1. #1
    Saab Enthusiast
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    30 Jan 2017
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    Saab(s)
    2007 9-5 2.3t
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    Oil in air intake pipe

    While replacing the thermostat on my 07 9-5 2.3t this weekend, I removed the air intake pipe for better access and noticed a grimy build-up around the by-pass charge and noticed an oil film (clean) in the pipe from the turbo. I also have noticed that it appears that I have oil coming up the oil fill pipe as there seems to be oil coating the ring around the fill pipe that dip stick cap meets when inserted. I had to replace the tube from the turbo to the oil trap last year when I broke it trying to remove it (the one with the check valve in it). I've added a pic for clarification. Any suggestions as to what this indicates or what I should look for as a culprit? Is this an indication of possible doom? It seems to run fine. This is not my engine by the way. Just a stock pic used for illustration.
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  2. #2
    Frank
    Administrator nordwulf's Avatar
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    30 Jul 2010
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    USA - Netherlands
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    Saab(s)
    previous: 2006 9-3, 2001-06 9-5, 2011 9-4X
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    How many miles on the car? The turbos on these 2.3T engines usually last a long time but eventually the seals may go bad. But that usually shows up as oil in the intake tube and smoke from the exhaust.

    But it is a 15 year old car and I never had a 9-5 of that age.

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  3. #3
    Saab Enthusiast
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    2007 9-5 2.3t
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    Just about to turn 159K. I don't notice smoke in the exhaust though. I'll have to keep an eye out for that.

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  4. #4
    Saab Addict
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    10 Apr 2017
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    Denham, England
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    528
    Saab(s)
    2011 2.0 9-5 Aero
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    Sounds as though the crank case is being pressurised, worth checking the vacuum hoses and NRVs for blockages. Also check the bypass valve doesn't leak.

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  5. #5
    Saab Enthusiast
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    30 Jan 2017
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    Trumbull, CT
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    Saab(s)
    2007 9-5 2.3t
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    Geoff I had trouble getting the tube I replaced fitted on the oil trap side. If that side is not properly set, I suppose there could be a leak there. If that is the case, would that be cause for pressurizing the crankcase or act in a manner of a blockage? A leaky by-pass valve is a possibility. I will check the vacuum connections.

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