On the L-Jetronic systems with the O2 sensor, you can get a close
approximation of the "correct" mixture by monitoring the voltage output
of the sensor while adjusting the mixture.  You adjust until the output
is about .5 volts; you never really see a steady .5 volts, but a rapid
fluctuation above and below that point.  Counterclockwise leans and
clockwise richens.

On Sun, 2 Aug 1998, Dan Hall wrote:

> Is there any way to make improvements in the mixture without an exhaust gas
> analyzer?  Just something in the ballpark until I can get to  a mechanic.
> Also, which way do you turn the CO content screw to lean or richen the
> mixture?
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Tom Young               young@sherlock.SIMS.Berkeley.EDU
Lafayette, CA  94549    '81 Vanagon
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