rubicondave33 wrote:Adjusted for more air and the problem went away.
Is that something a semi handy person can do or is it best for the service man to do it?
I'd let the service guy do it, since you have scheduled him anyway. He will have the right tools and instruments to set the air mix properly. Too little air and you have soot, too much air and the burner flame will go out. As to the soot around the baro, like Freddy said, point it out to the guy and see what he has to say. When the burner first fires off, there may briefly be little or no chimney draft, so the pipes and baro can get dirty from those few seconds on each startup. I have looked into my oil burner baro and it's not bad, but it's not shiny clean either.
P.S. We're all being very sexist here, talking about the "service MAN". It well may be a service WOMAN who shows up. If so, be comforted, remember that she had to be twice as smart and work twice as hard as a man to get the same job.