Im very sorry im sure this has been covered here, but im new and cant find it. I have a 150 cc that when i crank it has spark for about 3 seconds then no spark at all. shut ignition off, retry same thing. New cdi, new coil new plug, have not replaced stator. Like i said im sorry im sure its been said here before. i just cant find it, or figure it out.Im just trying to fix it for the grandson. Thank You