Gday there. This morning my 2000 ZZR250 lost a bit of power, and started to sound quite throaty while on the freeway. If I gave it throttle it would respond and come good, but just holding throttle it would lose power and sound strange. This lasted for about 5 minutes, and then seemed fine for another 5 until I got to work. Now, before I left I filled up at BP with 91ron unleaded. The top of the fuel tank was wet - was wondering if maybe some water got in and contaminated the fuel - and that was the result? Perhaps a spark plug is on it's way out? Maybe the carby got stuck momentarily? I'm not really sure, but I know I don't want this to happen again so just chasing avenue's to look at over the weekend.