I was trying to solve a high idle condition. When I bought the car it had a low idle condition. I replaced the ICV and cleaned the buterfly. Afterwards I had a high idle problem. When I saw that the mixture adjustment had been tampered with (tower was broken), I assumed that the previous owner had raised the CO mix to compensate for low idle so I leaned it. Too much. Then the car barely ran so I enriched it again. I haven't measured duty cycle yet, the meter is on order. From what I understand I have to test at socket three and look for 50%. Is that with engine off and key on or engine on?

The previous spark plugs where the R type. I put old non-resistor type back in. I also have a new oxygen sensor which I haven't installed yet. Could that help?

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With Regards