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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: Chadwick717 on September 19, 2014, 10:53:35 am

Title: Colorado Emissions
Post by: Chadwick717 on September 19, 2014, 10:53:35 am

Just moved to Colorado and from New Jersey and I am having a hard time passing emissions. Truck has new cats and I got it tuned up I thought.  But I'm coming out high on CO %. Any Coloradans got any tips for me?  Thanks for the help.

Title: Re: Colorado Emissions
Post by: Chadwick717 on September 19, 2014, 10:54:01 am

Oh it's a 79 k10 with a 350.

Title: Re: Colorado Emissions
Post by: zieg85 on September 19, 2014, 11:04:41 am

http://www.smogtips.com/failed-high-carbon-monoxide-CO.cfm

Title: Re: Colorado Emissions
Post by: Chadwick717 on September 19, 2014, 06:00:52 pm

Thanks! Missed that somehow in my search.

Title: Re: Colorado Emissions
Post by: VileZambonie on September 19, 2014, 06:23:09 pm

Sounds like it's running rich. What are your other readings?

Title: Re: Colorado Emissions
Post by: Chadwick717 on September 21, 2014, 07:09:04 pm

It was running rich. I have and edelbrock carb, not sure which one exactly. I leaned it out using the two screws on the front and drove it right back through and passed.   It runs well still, but now it doesn't start very easily. 

Title: Re: Colorado Emissions
Post by: roundhouse on September 21, 2014, 10:56:35 pm

Turn the screws back

You're good for another year