High idle - no vacuum leak

Posted by seestheday on Apr 27, 2013; 5:54pm
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/High-idle-no-vacuum-leak-tp4039923.html

Hi,

So I've put my bike back together and taken it out on the road. Good thing is that she starts up strong, runs smooth even before I've sync'd the carbs, and pulls like a demon with that 900 camshaft.  The header wrap I put on my 4-1 exhaust also looks great.

Bad news is that I can't get the idle below 4500.  Idle screw is all the way down.

It was actually around 5500 at first, but I switched the main jets from 75 back to the stock 68's and it brought it down a bit.

I have a 105 secondary main, so I think my next step is to bring that back to stock to a 102.

I have confirmed that there is no vacuum leak with the spray test.

Before I start buying smaller jets to try - is there anything else that I'm missing?  I guess I'd just like a 2nd opinion.