[Wbulk]

I recently read an article on getting accurate AF ratio readings for a carb vehicle by using an old style one wire unheated O2 sensor and reading the output with a multi-meter. You weld a sensor bung in your header, install a cheap one wire O2 sensor, and hook the positive wire on the multi-meter to the O2 sensor and the ground to body ground.

The article stated that you can accurately set the carb up with the correct main jets and determine if the power circuit is set up right. These older O2 sensors range is from 0-1 volt with an ideal cruise voltage of 400-500 mv. The power circuit should read in the 700 mv range. When I read this I thought man that makes sense. It would be a lot more accurate and faster than reading plugs and you don't need to buy one of those expensive A/F ratio monitors. You hook it up drive at a steady speed of 35-45 mph and check the voltage. Drive up a hill at a steady speed and check the voltage for the power circuit.

Has anybody tried this?

Wayne