i have a 2006 crf 250r and i cant get it to start. I started it like nothing a couple weeks ago but now it wont. It kicks over fine. I changed the spark plug and air filter. When i push start it in my street i can get it to start but it makes a werir noise and has no power just a litle noise. I was wondering if anybody has any ideas of something simple that could be wrong with it? or if i should just take it into the shop and let them deal with it?