re Re: Wierd 4kq CIS Fuel Problem

["Smith, Kirby A" <kirby.a.smith@lmco.com>]

Todd Phenneger <phen9461@uidaho.edu> wrote:

	On Wed, 10 Feb 1999, Phil Payne wrote:

	> Turbo or non-turbo has nothing to do with it.

		THen why is it that NA Audis run fine with no Oil Cap and
the
	Turbo motors couldn't even think of it?

	> What is important is the position of the breather system entry
point
	> to the air inlet relative to the air mass sensor paddle.  If the
gases
	> from the breather system enter _before_ the air mass sensor, the
engine
	> will always be insensitive to the oil filler cap test.  If they
enter
	> _after_ the air mass sensor, the engine should be sensitive.

		ARe the Turbo motors and Non Turbo motors different in this
	respect?

	> The key test, which is honestly not a great deal of use
diagnostically,
	> is: "Does an engine with breathers entering _after_ the air mass
sensor
	> stumble when the oil cap is pulled?"  If it does, it means that
there
	> are so many leaks already that one more makes no difference.

		All the NA's I've pulled cap on run fine without it.  Turbos
dont.
	At least IMHE.   L8R
	Todd
--------------------------------------------
My 1988 90qs all stop when the oil filler cap is removed.  The reason is
that the crankcase ventilation connection is after the fuel metering.  The
result is a too lean condition.  This is what Phil was describing. 

                .... Kirby   (Kirby A. Smith)
                              2 x 1988 90q
                          New Hampshire USA