quattro digest, Vol 1 #3159 - 19 msgs

[John Larson]

Running premium fuel will increase the HCs (unburned fuel) in the exhaust
stream.  Use a lower octane and more volatile fuel to decrease the HC
numbers.  Basic smog tuning tip #1.  HTH, John
>
>
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>
> Message: 4
> Date: Fri, 22 Mar 2002 09:56:08 -0800
> From: Motor Sport Visions Photography <msvphoto at pacbell.net>
> Subject: Re: CARB's smoggy skies
> To: quattro at audifans.com
>
> In a message dated 3/22/2002 Chris Dyer writes:
>
> << Failed my smog test today--GRRR!!! Missed CARB's hydrocarbons by 8,
> max
> allowed is 120, mine 128. Other tests fine, car runs great, mobil 1
> every 5k
> mi., etc.; idle measured on dyno is 751 rpm. (a wee low, no?)
>
> I'm planning on: red line fuel injector cleaner (run til empty), chevron
> supreme gas, finally a pre-check oil change.  Anything else I can do of
> a
> non-mechanical nature? (trying to avoid another visit to wrench) >>
>
> IIRC, you have a 5ktq? Regardless, the following advice still applies
> even if it isn't. What you spelled out above all makes sense, but I
> would add that you want the car to be well warmed up, and make sure you
> have an appointment where they will run the test right away without
> allowing the car to cool.
>
> Depending on what you call non-mechanical, if it were me I would toss in
> fresh plugs if the ones in the car are at all older, and I would perform
> a careful visual inspection of all vacuum lines.
>
> 751 RPM is a tad low--something's not quite right there either. How's
> the car running? Smooth?
>
> HTH and good luck!
>
> Mike Veglia
> Motor Sport Visions Photography
> http://www.motorsportvisions.com
>
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