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DIY Air Oil Separator

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Old Oct 27, 2016 | 12:50 PM
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Originally Posted by alexhuth
I had PPI done on my car today and they found some oil on the engine and it looks like two bolts had worked their way loose on one the cover behind the pulleys. I think its is the AOS that is leaking, it does have oil on it. Is there a better way to be sure?

Thanks
Alex
There's only one bolt holding the factory AOS in place:

Name: AOS2.jpg Views: 1792 Size: 47.0 KB

The cover behind the pulleys is the timing chain cover (the on associated with the notorious "timing cover gasket leak").

The AOS leaking is a separate issue. If it's leaking, you see it on the hose coming out of the bottom of it:

Name: AOS3.jpg Views: 1684 Size: 69.0 KB
 
Last edited by telum01; Oct 27, 2016 at 12:52 PM.
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Old Oct 27, 2016 | 01:01 PM
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The bolts I was mentioning are not for the AOS. I assumed the oil leaking from the AOS caused the bolts to come loose, but I am now more suspect of the Timing Cover Gasket.

Sadness.....
 
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Old Oct 28, 2016 | 08:16 AM
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Timing cover gasket typically leaks at the bottom of the engine.
 
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Old Oct 28, 2016 | 08:37 AM
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Originally Posted by embdenb
Timing cover gasket typically leaks at the bottom of the engine.
Actually they generally leak from the top near the tri seal area, the oil found at the bottom is the result of the oil leaking down.
 
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Old Oct 28, 2016 | 01:43 PM
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Originally Posted by irish07
Actually they generally leak from the top near the tri seal area, the oil found at the bottom is the result of the oil leaking down.
Thanks Irish.
 
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