Ok I have a 2006 zx636 about 20k miles. It has run perfectly fine up until about 2 weeks ago. I started it up and noticed it was idling kinda low but nothing really to concern myself with...or so i thought. I go to pull out of my complex and notice that it is sluggish when I try to give it throttle so I turn around and bring it back home. I cut it off and try to start it again and it barely starts and then cuts off and dies. Now it won't start at all. Here is what i've done to try and fix it. Battery is about 5 months old so it SHOULDN'T be the battery, but i will charge it tomorrow and see what happens. Changed spark plugs, changed fuel pump/filter, drained gas tank and refilled with gas, changed top fuel rail assembly/fuel injectors (the ones on the top part of the airbox). Now when I start it, it makes this buzzing/fast clicking noise. Idk if it's the starter or rectifier?