Login  Register

Re: Carb cleaning questions

Posted by seestheday on Nov 11, 2011; 4:22pm
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Carb-cleaning-questions-tp3485857p3500173.html

TOOLS/Donald, any ideas on this question?

Step 34 of the write-up says: " Open the main butterflies (not the choke butterflies). Insure that the very small holes in the bottoms of the carb throats, where the butterflies rest, are clear. If clogged, try running a small wire through them and chasing that with a blast of carb cleaner and then compressed air. Note: the CB750 VB42 carb has three (3) such holes including the pilot hole about ½” closer to the front or head side of the carb. The CB900 VB43 carb has five (5) holes including the pilot hole. "

How deep should the wire be able to travel?  

On my CB750K there are three holes, and on the one not covered by the butterfly the wire easily slid down fairly deep with no resistance.  For the holes either partially or fully covered by the butterflies the wire did no want to go down very deep at all.  I don't want to force the wire if I don't have to and they are already clean (really don't want to damage my carbs).
1981 CB750K with 900 cams
90K KM's, rebuilt head, rebuilt carbs, upgraded valve stem seals

My wife's recipe website that I'm trying to help promote: Strawberries for supper. Yes, I am a lucky man.