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Re: 5-gas analyzer used to test for blown head gaskets
Posted to Technical Discussion Forum on 12/16/2003 1 Reply

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This is correct. CO is a good indicator, as you will have 1.0% or so in the engine-out gases - plenty for any gas analyzer to see. (CO2 is there in higher concentrations, but coolant may absorb it too... Login to read more.

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