<VV> Idle question

[Kenneth Schifftner]

Assuming the float level is correct, I'd suggest using the old "momentarily put your hand over the carburetor inlet" on a running engine to help clear the idle circuit then use a tachometer to adjust the idle mixture screw to obtain the highest smooth idle speed.  Turn the mixture screw out "so many turns" really doesn't get to where the engine is running properly.  I'd guess that a too lean condition at idle is at least part of the problem. 

Ken Schifftner