When i try to start my erst s2 it starts but most of the time it cuts out and i think it's fludding it's self and will not start for a good whyll. So i pulled the clip off the cold start and it seems to start alot better. But i cant drive it with it off because it starts missing. Soon as i put the clip back on when it warmed up it seems fine. what can be my problem? is the cold start gone

im new on here so allright all