Hi, I have a 1987 FZR 1000 racing bike replica, It won't start. The battery is good. I can hear the fuel pump run. The starter works. The engine turns over. But there is no start. Obviously the two ie fuel and ignition have to be present to start. There is fuel, I know that. But is there a spark? The bike ran about 2 yrs ago. I tried to remove the gas tank but underneath are a multitude of tubes, I don't know which one to disconnect===will the gas overflow?