1986 Chevy Celebrity Adjust carb w/ OBD I Scanner?

1986 CHEVROLET CELEBRITY
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ROBBIEREMLAP
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Engine Performance problem
1986 Chevy Celebrity 6 cyl Front Wheel Drive Automatic 1.4mil miles

Gentlemen:
GM has me adjusting the two adjustments on this carb (idle mixture and running-top) with dwell meter. Can I use my scanner on mixture control, for example to do the same? Setting might be 50%, for example. My scanner is an older OBD I Auto Xray. Thnx Rob
Mar 6, 2009 at 9:16 AM
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MMPRINCE4000
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It would be a very difficult way to adjust a carb. The O2 sensor would measure the A/F ratio, but it would have to sample the mixture over a period of time, since they do not give immediate feedback.

If you want to adjust the carb. properly, take it to a chassis dyno facility and hook up to a wideband O2 sensor.
Mar 9, 2009 at 7:09 AM