I rebuilt a '86 Tomos A3 Golden Bullet it idles fine with the choke on and off. But if you try to give it gas it bogs down and will die. If you play with the choke plate as you give it gas you can get it to rev up but from idle it will die if you give it gas. Any place to start would be nice. I just cleaned and rebuilt the carb could it be the timing. I checked for air leaks also but can't find any. Or how about the plug gap the plug chop looks good. I am at a lose any help would be great.