Re: weber bucking problem
The secondary does not come open until about 2/3 throttle. It is a mechanical secondary, so if you open the throttle wide open and it does not move, something is wrong with the linkage. The Weber has two holes right at the throttle plate. They are called transition holes. At idle gas dribbles out one of the holes and as you give it more throttle, vacuum will pull gas out the other hole. As the throttle plate continues to open, gas will start to come out the ventures. At about 2/3 throttle, the secondary starts to open and the same thing happens on that side. At wide open throttle, the progression holes are not supposed to have any gas coming out of them. To raise the float, take the top off the carb and lift up a little on the float. There are two tabs on the float. One limits the drop and the other limits the height. Just lift it a little to bend the tab and see if you see a change. It did not take much to solve my problem of running out of gas. If you need more info, just E-mail me and I might be able to scan some pictures out of the book Iíve got. Hope this helps.