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I have a '98 ST2 that I have owned for just a few months. Overall the bike runs great, but it has a strong fuel smell at idle. I am assuming that it is running too rich. The previous owner had been into the ECU cover so I assume that he had adjusted the idle mixture potentiometer. Last night, I went in and adjusted the pot toward the lean side. This made the bike idle much smoother, but I am still smelling fuel at idle. Are there some other mixture adjustments that I should be aware of?
 

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Mr Leakered
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A well running Duc tends to be a bit rich. You'll see some carbon deposited on the exhaust tips. That said, you should see MPGs in the mid-30s for an ST2, if not a bit higher.

I adjust mine without a Gastester (yet). I generally make small adjustments and ride it to see if it is too lean (popping and surging). I set the trim just a bit above that point.

I have found that making large adjustments to the trim can throw off the TB sync a bit.

Have a good one.
 
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