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Re: where is the CO sensor (archive)
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Posted by MarkPike on August 29, 2001 at 07:55:33:

In Reply to: where is the CO sensor? 89' EVO II posted by James on August 29, 2001 at 06:23:16:

The flat head screw between the injectors is the "air" screw (I don't know the official name). If you adjust this it lets more air inside raising the idle. The CO adjustment is on the AFM. I don't believe there are any fuel intake adjustments unless you have an adjustable fuel pressure regulator which is at the front of the fuel rail.
HTH

Also, there seems to be a screw (flat head) easily accessible from the passenger side, coming up between the injectors. Does this control the fuel intake?

James




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