engine rev

[Raptorider660R]

ok my enigine will only start with the choke fully on then it starts and if i hit the gas it turns off then if i dont hit the gas after of like 8 seconds of it being on it just starts revving really loud by its self and i shut it off cause i dont want to mess anything up what could it be im guess maybe my valves maybe adjusted wrong idk

[4punksdad]

running out of fuel.

[Raptorider660R]

i already fixed the problem thanks anyway it was my carbs i didnt tighten them to the airfilter