[CriticalMass]

Thanks blykins. That will get me on the right track and I'll come back if I don't figure things out. Hate it that his notes would make perfect sense to him but I have to work to decipher them.

As far as idling that fast: He mentioned that last time he made these adjustments he had to baby it down to the emissions place as it did not like running under these conditions. Under CO emissions standards maximum idle speed is 1300rpm so I would imaging he wanted to set it as high as possible, thus 1250. Currently, under normal setup, it idles much slower.

Maximum hydrocarbon emissions are 1000ppm. On one of his failing stubs I found 1300ppm (but I don't know what his setup was). Then on his latest passing stub HC emissions were under 400ppm.

Do you think I could drop 300ppm with additives or is it going to take running alcohol?

Thanks again.