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Re: 91 chevy 4.3 high CO...help....
Posted to Emissions Forum on 3/24/2005 1 Reply

Hi Jim,

A couple things come to mind, first off, what is the Integrator at at cruise and idle, because the BLM is on the lean side of the range, possibly do to correction, but not sure yet. Also, is there an AIR system on the engine? Look at the injectors fo... Login to read more.

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