I WAS CHECKING MY TRANSMISSION FLUID ON MY TRUCK, MY SPARK PLUG BLEW OUT NEARLY HITTING ME IN THE FACE. I FELL OFF MY STEP STOOL, AND HURT MY WRIST BECAUSE OF THE BIG NOISE AND IT SCARED THE HECK OUT OF ME!!THIS COULD HAVE BEEN A MUCH WORSE OF DAY FOR ME IF IT HIT ME. THIS IS ALSO THE SECOND TIME THE PLUG HAS BLOWN OUT!! *TR