this is from firsthand experience on a 4 cyl s 10 fuel rail hold down screws for the fuel injectors. put bolt in socket and push bolt through a 2 in piece of duct tape and tape the 2 pieces to the socket and rachet or extension. this works back bolt cant be seen and you WILL drop it and wont find it. buy a few extra 6mm bolts before you start. E stands for empty not extra fuel. thats why no 4 inj was failing to start with. good luck.
shoot this thang marcell and i aint kidding neither