I hAVE A 1983 Nissan Datsun and I rebuilt the original carburetor and put it back together but obviously did something wrong because it wants to runa t a screaming 4,500 rpm.  The secondary choke plate is open and I don't think it is supposed to be when it is at idle.  When I tore down the carburetor I didn't know that you had these like ball bearings or beebees that are in them.  I don't think I put all of them back in the right place.  I need a schematic or picture diagram of everything.  Thanks for any help.