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Re: Is this cat dead??
Posted to Emissions Forum on 11/5/2010 24 Replies

All signs point to running rich.

Zero O2 (no oxygen left over)

Very high CO (rich indicator)

Low CO2 (inefficient air/fuel ratio)

Can't really see the NOx in the pic, but I think it shows low, which will happen on the rich side. Login to read more.

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