My sons 2007 CRF250 has been getting hard to start, and it failed us completely at Swan today. Novice rider, stock motor,@ 34 hrs on bike, intake valves and cam have been replaced-with stock parts, valve clearances have been checked and look good. Other people have actually kick started it for us in the past, when we couldn't kick it anymore. Against my better judgement, we have even push started it, but it always started after the initial struggle. Drove for 5 hrs. from Tulsa area for Swan today. I started it in the garage last night -had to actually twist the throttle 3 times before kicking-after i had given up hope, and it fired up, so I thought I had figured it out. We actually got it started at Swan this morning, and he shut it off. I told him to start it back up and let it warm up longer. It never fired again. Needless to say, a 16 yr. old racer doesn't take this real well! I pulled the plug and checked for fire, couldn't see a spark, but wasn't sure if this is even a good idea with the ignition on a Honda. (coil part of the spark plug cap) . Tried another plug. No fire. Your advice and ideas are greatly appreciated, from your neighbor to the north.