Join Date: Mar 2011
Location: Pure Bred Minnestrohtan
Those carbs have rubber everywhere. It is either flooding out (possible but I don't think so by your description), or more than likely has a vaccum leak somewhere. Check the boots where they mount to the head, pull the black covers off the tops and check the slider diaphrams for pin holes, check ALL vaccum lines, to the fuel petcock is one, the rest, after all these years of heating and cooling they get hard, brittle and crack. You would still be able to revv if they were out of sync, unless is was so bad, which if that was the case you would be able to see it with a visual inpsection manipulating the throttle plates with the carbs off the head and looking at them opening. You have a vaccum leak somewhere I would bet.
Those same sliders in the carbs, if they are worn out, they could be sticking as well, which would cause the same condition. Check for heavy grooving and wear. They slide up and down, and get pretty messed up over years of use.
"In a world full of hate.....There is nothing left to divide."
T. J. Maiden ca. 1994
What's wrong with you people? The sky is MANY colors throughout the day....not JUST BLUE!