my motor had a new crank put in it and that screw was not put back in , i had put the amount of oil specified in the motor and did not know it was not there . i started the motor and it blew smoke out of the screw hole but no oil had come out and now i can not even get the engine to start or even make any noise .could that have burnt out any electrical part i tried a different cdi box with the same result!any help is appreciated thanks mike .