Ok I read some forums about my problem and I wanted to check to see what you all think as well. My 2004 FZ1 misfires under a load under heavy throttle. It didn't happen until I washed it one day. Then on the way home from my automotive technology class (where I washed it) it started to misfire when I gave it heavy-ish throttle. It accelerated just fine when I was soft on it and would cruise just fine. So, I thought well I must have gotten something in the ignition system wet. I waited a week and rode it again with the same problem. Except this time I got on it in second gear while it was misfiring until about 8k and then my misfire went away for the rest of the ride. Could it be my spark plugs and wires? Or my coil? Or even something else?
Here is a picture of the sparkplug, the threads are wet but the igniting end was a little dark but still dry:
Here is a picture of the sparkplug, the threads are wet but the igniting end was a little dark but still dry: