Re: Carburetor q's

Posted by Hoosier Daddy on Aug 01, 2013; 4:26pm
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Carburetor-q-s-tp4044255p4044355.html

See's is close but not quite on the standard procedure. They will most like not all be out the same exact amount. The Factory Serice manual will list a starting point and that is the last time they will all be the same..
Very general: With the engine warmed up to operating temp, shut it off and turn them all the way in until seated (not too tight, just snug) and then out that specified amount from the manual, be it 1 .75 turns or 3 turns.
 Then you will restart the engine and beginning with one carb, turn it's screw in until the idle speed drops, then back out until it no longer climbs, then usualy 1/4 turn more out. Then move to the next carb. So depending on where the idle speed settles in on each carb is where the final position of each mixture screw would be.

That said, in order for this procedure OR a sync to work your carbs have to be functioning right in the first place. If something is wrong like a plugged jet, or a vacuum leak, it will be near impossible to tune.