CO adjustment on 3.2 Carrera.

[Nick Triesch]

I do not have a CO tester but I wanted to put the adjustment at a base adjustment until I can get to a shop. I turned the bottom mixture screw clockwise hoping it would come to a stop but I can’t seem to get there. If I do get to the stop I was told about 3 1/2 turns counter clockwise should get me to a base setting. Does that sound about right? Thank you. Nick

[grb008]

Make sure your turning it clockwise as if you were looking from the bottom. The screw should stop, if not there is an issue. I would pull the AFM then and see what is going on. Also for me I decided to get an unmolested AFM from a 996 as I knew mine was cracked open and the spring adjusted for some reason. After putting in new fuel lines, injectors, gaskets, fixing vacuum leaks, I wanted a baseline AFM.

[917_Langheck]

There is a procedure written up somewhere here that discusses how to set up a base setting without the use of an O2 analyzer. Unable to find it via my phone, unfortunately.

[grb008]

You can use the voltage off the O2 sensor as a rough estimate.

I believe its about .9 volts but would have to check that.