I have finally finished a 125 rebuild and have got the engine running. The bike turns over and idles fine but dies as soon as I throttle up. I can't creep the throttle up slowly, doesn't work. If I add choke then the idle rises to 5000rpm but dies again when I throttle up. If I sit on the bike then it simply dies when I try to pull away. All jets are clear and clean SO: Rich or lean? pilot, needle or main jet issue? Just need a heads up where to start looking as I can't take it out riding to get a proper diagnosis.
