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. |
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