So far I have changed the fuel pump and fuel lines in the tank. I have changed the quick disconnect that comes out from the bottom of the tank. Ive replaced the spark plugs and the spark plug wires. Ive drained the tank and started with new fuel. Im fresh out of ideas. It takes about three starts before the engine will turn over and fire. Once its running it will idle all day long. As soon as I increase the throttle the bike will start to sputter. It will usually do ok at full throttle though. What else should I be looking for?

 

I would check the TPS