My 400ex wont start at all getting gas has spark cleaned the carb. Im out of ideas. i just want to ride my fourwheeler. Someone please help me.

 

Just because it is getting spark when you take the plug out and ground it and see a spark, doesn't mean it is sparking once it is under compression. I'm not saying the plug is the problem, but it is cheap and easy to replace it and try it again. After that, it may be a timing issue. Maybe the chain jumped a tooth or something.

 

I replaced the plug. Nothing. And I ordered new cdi.