Car moddel moveng mechanicks not working

I am new to the unreal engine and i followed two tutorials to make my car model move.
But it doesnt and when i up the wheel radius it just spins in circles and the back wheels spin the wrong way.
I dont know how to fix this.
I imported the moddel from blender in a verry small scale and scaled it up in the bp for the car.
Do you know how to fix this issue.