235 only runs with carb choked

checked for vacume leaks at carb intake vacumeadvance wipper hole pluged.carb was resently rebuilt and ran ok till now.whith carb choked at low idal 19 inch pounds runs rough. thanks

 

Have you monkeyed with the idle mix screw?

 

Spray around the butterfly for the throttle plate with wd40 to check for vac. leaks there also.

 

Once In A While

The Bakelite base spacer will crack and cause a serious vacuum leak , it'll prolly run fairly well off idle but will not idle atall unless the choke is pulled out .

Dismount the carby and gently raise the Bakelite spacer off the intake manifold , unless it's *perfect* , it's junk .

NOTE : no gasket is used between this spacer and the intake manifold .