Hi guys,
I plan to do carb balancing using one of those DIY fluid manometer. I've found quite a few on the net, something like this Marty Igzanito DIY Manometer PDF with Pics [url]http://www.zivney.net/library/carbsync.pdf[/url] and his Web version with only 1 pic [url]http://www.powerchutes.com/manometer.asp[/url].

I believe I can build the manometer, but I have one big problem. Where do I connect the 2 ends of the manometer tube? I've been searching high and low in the net, but so far I couldn't find any that shows me how to do it. Some indicate that the manometer needs to be connected to the carb vacuum ports but where the heck is this vacuum port? My carb model is Mikuni Solex 40PHH.

And if the carb itself doesn't in balance..how do i balance it?

Thanks in advance.