Just an afterthought on the O2 sensor/exhaust gas temp sensor thing. For
either to work you need to be able to control the mixture in order to make
adjustments. Of course, the easiest way to do that is to use the manual choke
to enrichen or lean out the mixture...this would work best with a engine
equipped with a exhaust temp sensor. In a car equipped with an O2 sensor, the
carb is equipped with a solenoid using a duty-cycle program to control the
mixture in response to the feedback from the O2 sensor. In reality, it's a
lot more complicated than that, but I would be willing to explain it to anyone
interested.
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