Getting grey smoke when I pull from low revs, but only until the CHT gets above 200. Then, no smoke. I am running a bit fat on the idles (55's on a lightly cammed 2056). Any suggestions on what I should be looking for?

Check the plugs for what type of build-up they have, & cross reference to a color chart from many sources.

https://www.google.com/url?sa=t&rct=j&a...WVegJMtAqO6iKuA

https://www.ngksparkplugs.com/about-ngk/faq...ad-a-spark-plug

http://www.onallcylinders.com/2012/12/20/r...ur-spark-plugs/

Grey or Blue-Grey is usually some oil, so maybe your rings are getting a tad loose then sealing when it heats up, since you said it goes away after the CHT hits 200 - but check the plugs.


Tom
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Thinking along those lines, but I have new rings. Will read the plugs. Runs well otherwise.