Alright I picked up a big red (i have no idea of the year) its being temperamental and i dont know what it could be, i have a friend that rebuilds this things religiously and it has him baffled too i have no battery so i pull start it when it runs it runs like a top and will run all day long without any hickups lots of power no missing or farting but it is having a no spark issue for example yesterday i took it for a 3 hour ride through a bunch of trails we got to where we were going and i shut it off to have a fire and hotdog turn the killswitch back to run and it has spark for the first revolution then has nothing i’ve changed the spark plug multiple times same with the coil i even put a screw driver in the plug wire socket and had a friend turn it over for me it gives me one good shock and then no spark i originally figured wiring but once it runs it wont die it runs like a top any idea what this could be? it has some sketchy wiring and no key ignition, or battery but likewise with my 200 trike and it always runs great. stator? generator? input is greatly appreciated im stumped