Airflow sensor adjustment, L-jet troubleshooting Options

[Anton]

My 1.8 engine was running badly at idle and sounded harsh on acceleration. CO screw and dwell/ignition tune-up did not solve the problem. I thought it was time for another valve job until a 914 buddy of mine, Richard, adviced me to check on the airflow sensor. (IMG:style_emoticons/default/ohmy.gif)

After removing mucho messy glue on the cover (thanks, PO) and opening of the sensor, I found that the mixture was way too lean. There was a marking of the old position that was richer, but only after adjusting beyond this point, at a total of 8 (!) teeth on the wheel, idle became regular. What it did to acceleration and low rev. driving was even more remarkable... Is this what a 914 can do...? (IMG:style_emoticons/default/laugh.gif)

It all became evident after a period of driving with backfire due to wrong dwell/timing. Some of you will now probably say "evidently". Also I have heard of this problem before, "just readjust a couple of teeth on the wheel", but a total of 8 teeth! (IMG:style_emoticons/default/blink.gif)

Anybody care to comment on this? Is this usual for an L-jet?

BTW, I have not yet checked the current CO reading.