Hello, I recently purchased an 05 zx10r and I'm having some issues. I bought the bike about 500 miles away from my home and rode it back. The first couple hundred miles went fine with the bike running perfect. Then when I pulled in to a gas station it started having this issue. Basically it's very hard to get the bike going. Anything under 6000 rpm = almost no power and a lot of times if it's under load it refuses to rev up regardless of throttle input. I tested the cylinders and 2&3 seemed to not be working. I've replaced the plugs, coils and throttle bodies (including injectors) on all the cylinders since I didn't want to go in there again, but the problem is still there. The battery is old (has a date on it from 2011), but it holds 12.9 volts and with the bike on the voltage varies from 13.5v to 14v depending on rpms. The fuel pump is the stock one too, but when riding it back (rode it about 300 miles with this issue) it had normal power above 7-8000 rpm. If anyone has any suggestions I'd really appreciate it. I just want to ride my new bike lol.