[s-cars] pressure testing...

[Mike Fitton]

Okay, thanks.

-Cheers!
Mike

Tom Green wrote:
>>
> Normal, Mike.
> You may want to plug it to better hold pressure and reduce the
> noise while looking for leaks in the intake tract.
>
> Tom
>
>
>
>
>> -----Original Message-----
>> Date: Sun, 23 Nov 2008 22:28:44 -0500
>> From: Mike Fitton <rfitton at vt.edu>
>> Subject: [s-cars] pressure testing...
>> To: "'s-car-list'" <s-car-list at audifans.com>
>> Message-ID: <492A1F6C.4020008 at vt.edu>
>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>>
>> I've been attempting to pressure test my intake and hopefully try to
>> track down some leaks.  I capped off the compressor inlet and am using
>> the wastegate frequency valve port on the compressor housing.  Have met
>> with some success with this setup and seem to be getting some useful
>> information.  First thing I notice is that air is coming out of the
>> breather port on the front of the valve cover.  During operation, this
>> air is routed back to the compressor inlet.  Since it's after the MAF,
>> it doesn't constitute unmetered air, but I still wonder if the turbo is
>> supposed to be wasting that energy on moving that air around.  The only
>> way I can see for this to happen is via the PCV system that starts under
>> the throttle body.  So my first question is...is this normal or does it
>> indicate a failure of the PCV valve?  I've been testing it at about 
>> 20psi.
>>
>> -Cheers!
>> Mike
>
>
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