The screw for setting mixture is located on the bottom left corner of the Air Meter, it's a 3mm allen key. Turn it clockwise (in) to richen.
If you are handy with a digital volt meter and have a good one available that can read down below 1volt you can also set mixture with a poor man's approach that works well. Basically you unplug the stock O2 sensor and measure the output voltage the sensor is generating with it unplugged. If you are lean that voltage will be below 0.3vdc and as you richen it it will go above 0.7vdc you basically lean the mixture till voltage drops to <0.3vdc and stop. Then you count turns as you richen it till the meter swings up to >0.7vdc and stop. Then turn the screw back lean 1/2 the number of turns, that's aprox. lambda. PM me if you wish to try or need advice.
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Originally Posted by aways
OK, thank you. I will do the oil cap vacuum leak test this evening. If it's OK, I will have my shop adjust the mixture (I don't have an O2 gauge). The adjustment is basically just the turn of a screw. Is that correct? Hopefully, not too expensive. Hopefully I don't need a new cat...
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