Issues with character spawn

Hey guys,
I created my own vehicle and a checkpoint system for a time attack gamemode. The problem is: If I try to respawn the vehicle (for exemple the vehicle gets stuck) i’m not able to possess it. When I press Y (the button I set ingame) I can destroy the actor, but unreal respawn a lot of copies of the vehicle and i can’t possess it. Can sameone help me? Thanks a lot guys