[dennislbrooks]

Geezer#99, Plugged vaccuum then I set the timing at about 10 btdc, reconnected vaccuum and it helped but still some there. 15btdc did not make any more difference.

I have a little play in the throttle shaft. I will remove and check for wear. The base is cast steel or iron --should be little if any wear. Maybe I can get by with a new shaft. The hole in the base new is 5/16"- .3125. The shaft new is .309".

This carb is on a 1954 hydraulic lifter 235 in a 1946 3/4 ton. Seems to be a good engine

Ok, the shaft shows little or no wear --steel -- and does measure at .309. The wear is in the base and measures as good as I can measure about a little less than .313.

But first I am going to lean the mixture screw and increase the idle screw.

thanks for the response.