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Old 10-22-2009, 11:57 AM   #1
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Oil in intake runners

I removed one intake runner on my 2000 Boxster for some other work and noticed there was a fair amount of oil coating the insides of the intake. Anyone no a possible cause or is it just normal to see some oil on an 80,000 mile engine?

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Old 10-22-2009, 12:35 PM   #2
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Probably AOS going bad...do a search and you'll find lots of posts on the topic.
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Old 10-22-2009, 01:01 PM   #3
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Some oil is normal, like a lite coating. If it's puddling, you probably have an AOS going bad.
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Old 10-22-2009, 01:07 PM   #4
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I also noticed some oil, not a lot, in the intake manifolds when I went to clean the throttle body on my 2000 base with just under 90K. I have subsequently replaced the AOS, not sure if that took care of the issue or not.


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Old 10-22-2009, 02:57 PM   #5
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There's some in mine, too. I suspect there's some in everyone's.

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