So, I did a compression test and got 185, 180, 185, and 190psi on the cylinders, which seems decent.
Then I tested my O2 sensor again, having made some cables this week to keep the heating wires connected. I couldn't get the O2 sensor to respond well, so I replaced it with the Bosch 15735. The old O2 sensor tip was completely covered in white stuff. Didn't seem like it should be working at all.
When I measured the voltage on the new O2 sensor, it was really low, some mV the whole time. So I went to adjust the AFM bypass screw (after changing the o-ring). I found it really hard to get a stable voltage less than around 750mV. Any time I unscrewed the bolt some more, the voltage would move around a lot, or if I tightened it a bit it would settle to something around 750mV. I don't know if that's normal. In F.R. Wilk's web site
CO Level, he says that it should be adjusted to 500mV for the proper setting. Maybe I need to try using a big capacitor to try and stabilize it. Has anyone succesfully done this (adjust the AFM bolt and get 0.5V from the O2 sensor)?
I'm also going to try talking to the smog guy to see if we can attach the gas analyzer and tweak the AFM bypass bolt to optimize the CO level.
oreke