Air pressure tester for intake hoses & IC: 200q20v digest.

[Schaible, David]

My oil cap leaks also.....makes a @#$*ing mess so I thought it should be obvious if that is main culprit

-----Original Message-----
From: Mike Sylvester [mailto:msylvester at verizon.net]
Sent: Wednesday, May 21, 2003 9:44 AM
To: Chuck Pierce; Eric_R_Kissell at whirlpool.com
Cc: 200q20v at audifans.com
Subject: Re: Air pressure tester for intake hoses & IC: 200q20v digest.

Aren't the valve positions irrelevant?  The throttle body should be holding
the pressure, shouldn't it?

I tested my car last night with a tool that Peter Schulz put together.  My
biggest leaks were the oil cap and the control hose to the TBV.

Mike Sylvester

----- Original Message -----
From: <Eric_R_Kissell at whirlpool.com>
To: "Chuck Pierce" <cpcycle at earthlink.net>
Cc: <200q20v at audifans.com>
Sent: Wednesday, May 21, 2003 7:57 AM
Subject: Re: Air pressure tester for intake hoses & IC: 200q20v digest.


>
> Chuck Pierce <cpcycle at earthlink.net> asked:
> >When pressurizing the intake system to do this check,
> >doesn't air go out a open valve?
>
> If an intake valve is open, the pressure goes into the cylinder and is
held
> by the exhaust valve which is usually closed.
>
> If an exhaust valve is open the pressure usually cannot get into the
> cylinder because it would have to get by a closed intake valve.
>
> If an intake and exhaust valve are open at the same time (i.e. valve
> overlap) then you have a leak path.
>
> We need to ask:  Is there overlap?
>
> Eric Kissell
>
>
>
>
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