April 13, 200817 yr Sometimes when I pump the gas to get the choke to set, it sometimes causes the secondary to open up and stick on my Brat causing it to rev really high. I in turn, have to get out and push it closed to knock the idle back down. What can I do to keep it from doing this, it has done it since day 1 but only sticks every so often. The spring was installed to cut down on this from happening.
April 13, 200817 yr Two things I can think of that might cause the problem. To much travel of the linkage when you floor the pedal to set the choke. Try adjusting the cable for a bit less movement by turning the adjusting nuts more towards the housing of the cable. A binding of the linkage for the choke and the bellcrank of the throttle cable. Mine did that when I first put the Weber on. Did you put any spacers on the throttle shaft between the Webers linkage and the bellcrank for the cable? That's where mine was binding. I put a couple of flat washers between the pieces there, no more binding.
April 13, 200817 yr Author Tom, the Brat came with the Weber on it when I bought it. I will check out the cable and see how things do. Thanks.
April 13, 200817 yr This got me to thinking. Is it really opening while I am driving? Easy, unhook it and go for a ride, if it sounds and drives differently (probably quieter and slower, especially at more than 50% throttle) you know it normally opens when hooked up.
April 14, 200817 yr Easy, unhook it and go for a ride, if it sounds and drives differently (probably quieter and slower, especially at more than 50% throttle) you know it normally opens when hooked up. Yep, classic carb tuning...disable the secondarys, dial the primarys in, hook up secondarys, tune, and so on. Doug
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