hello. I have a 95 318i I am new to bmw's, so I dont know much about them. I started it a few days ago and i noticed it was only running on three cylinders. so i checked for fuel pressure and it was good. i also made sure each injector was working. Next I checked for spark. every cylinder was firing except number one. I replaced the plugs and wires. nothing. I figured it was the coil pack, so I replaced it. the car is still doing the same thing. I checked the number one cylinder and it was not firing. It was not throwing a check engine light, but i decided to check the codes anyway. the code it was giving was ( 1....2....7....1 ) I have no idea where to go next. I know you guys know alot more about these cars than me so that is why I came here. thanks.