Date:         Tue, 26 Oct 2004 06:43:14 -0700
Reply-To:     Tom Young <tomyoung1@COMCAST.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Tom Young <tomyoung1@COMCAST.NET>
Subject:      Re: Calif Smog Issues
Comments: To: jimt <wetwesty@tactical-bus.info>
Content-Type: text/plain; charset="iso-8859-1"

From

http://www.artsautomotive.com/thesmogstory.htm

And I quote:

"What causes high CO (carbon monoxide)? High CO is caused by a rich air/fuel
mixture. The air fuel ratio should be 14.7 parts air to to 1 part fuel.
Problems that can cause a rich mixture include:

Problems with the feedback system (the system that regulates the fuel being
added to the engine based on the amount of oxygen in the exhaust).

Problems with a computer sensor such as the coolant temperature sensor, air
flow meter, MAP sensor, etc..

Problems with the fuel pressure. Fuel pressure that is too high can cause a
rich mixture."
---------------------------------------------------
Tom Young
Lafayette, CA 94549
---------------------------------------------------
----- Original Message -----
From: "jimt" <wetwesty@tactical-bus.info>
To: "Tom Young" <tomyoung1@COMCAST.NET>; <vanagon@GERRY.VANAGON.COM>
Sent: Monday, October 25, 2004 8:46 PM
Subject: Re: Calif Smog Issues


Running to lean can give high CO.  from your readings it looks like you are
actually running lean.