When pressure testing intake, air leaks from rear of passenger head--anybody know why?

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Old 01-09-2008, 07:10 PM
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Default When pressure testing intake, air leaks from rear of passenger head--anybody know why?

Actually, I can guess why, but is it normal?
Old 01-10-2008, 10:23 AM
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where is it coming out of? you have a hole in your head?
Old 01-18-2008, 06:43 AM
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Default Same thing happens on my 2.7T

so I guess that means it is normal.. -I believe it is a safety vent.

However, how the air endes up there in the first place is something I don't understand. In my case, I plugged the intake in front of the trottle, and still air find its way into the motor when doing the pressure test procedure. Could it be that the air enters via the turbo oil paths?
Old 01-19-2008, 01:32 PM
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Hadn't thought of that--could be... Thanks for alleviating my concern!
Old 01-19-2008, 02:20 PM
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Default woha ha, ha, - any time Jenga.. Seriously, I don't know what I am talking about

- I hope someone who does, updates this thread with some words of wisdom...
Old 01-21-2008, 07:49 AM
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Some gets past the rings down into the crankcase.
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