I am currently having major stress issues with my '06 650. I didn't start her all winter, bad idea i know, but i was really busy and yes, forgot. So when i pulled her out last week, she just kept turning over and not firing, and completely starting. I replaced the spark plugs, oil, cleaned the gas and still the same problem. The fuel pump is working fine from what i hear. So could it be a dirty fuel filter? Bad carb? Please tell me i didn't bosch her up too bad...oh and a good battery as well.