After about 2 weeks off it, my '88 zx2r doesn't want to start. I've already tried charging the battery, I also checked the spark plugs (they were fine). Kill switch is not on, and there is plenty of fuel. When I try to start it it does one of two things: It won't crank at all, but there is a buzzing sound coming from near the battery, this happens about 50% of the time, and has been doing so for about a month. The rest of the time it cranks but won't start. If anyone has any ideas I'd love to hear from you!