Re:Emissions Question

[christian147@domain.elided]

>If so, it seems to me that anything that makes CO2 go down would make CO
>and/or HC go up.

Not an exhaust leak.  That is the primary use of CO2 in the test schema.

>Can anyone give me some advice on what I can do to reduce CO2 without
>raising the other values?

CO2 is not a regulated compound per say, it is used to insure the sample
is not overly diluted.  As such it is a minimum number not a max number. 
In MD any test with CO2 below 12% (I think, been a few years since I
dealt with static testing) is invalid, due to dilution with air.  Check
your exhaust system for small leaks.

Chris Hall
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