yfz 450 dirt bike...coolant leak.

[quadsport_rider]

so i think my coolant seal went in the bike...took the spark plug out and kicked it and nothin but coolant came out...so anyone have this problem before...she runs when there is low coolant which isnt good but...anyone can help and tell me where the seal or part i have to replace is it woul dbe greatly appriciated...thanks in advance...??:confused:

[underpowered]

coolant in the cylinder? sounds to me like a head gasket, should be the only way coolant can get into the cylinder