Drained the gas fuel line and float bowl. Put in fresh gas. Started up ran for a while and after a little while, the smoke lessened but still smoking. Compression before starting is at 150 each cylinder. Thought maybe the air screw needed adjusting. Screw is broken off in carburetor. How do I get this out? Anybody ever tried to drill one out? I am assuming that the air screw was screwed all the way in then snapped off. Assuming that it was...and not getting proper air...could this attribute to the smoking? At 150 lbs compression...think maybe valve guides?
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