t500

I have a problem with a Suzuki T500 and its running away and can't be switched off! Any ideas? Its not electrical as at low revs the ignition switch works. I am of the opinion that at high RPM the engine starts to "diesel" and Its happened when the choke is left on too long. Its a pretty scary...

Okay so, here in NC we're required to complete a Senior Project for graduation. Sooo my girlfriend's father happened to have a motorcycle that had been sitting in his basement for 20 years. Oh and what was left of a parts bike.. including a new rebuilt block =]. So I tossed the bikes on the back...