I have a ZXR750 L3 which is obviously quite old now, but it has begun to miss-fire quite badly. I had a failure of the fuel pump at the same time so I thought that was it. The bike ran ok for a few days after the new fuel pump was fitted, but now has started to miss-fire again. Any ideas what could be causing it please? I suspect ignition, but what ignition parts are most likely to fail?