Addition on 34PICT3

The key to good adjustment of Solex 34PICT3 carburetor is to decide the throttle butterfly initial position, because the idle speed is adjusted not by throttle position but by bypass air control screw. The throttle position is fixed at adequate position on any later adjustment.
But remember here the throttle position must be so correctly to activate only one idling spray nozzle and the latter two nozzles must be activated one after another, these transient process produces smooth rotational rising.
At the same time opening bypass screw must affect on the idle speed with increasing speed.
Unfortunately the description on this important fact is not found in the information in the Web sites, the smog phenomena in 34PICT3 carburetor would be almost removed considerably though the fundamental setting, leaner mixture, tendency remains.
Breath coughing, hesitating and stumbling would thoroughly disappear as to no complains,so far as the vacuum ignition advancer is equipped and it works properly.