I'm working on an 01 S600. I'm experiencing misfires on cyl 7,8,9,10,11,12( Left Bank) I've replaced all spark plugs and replaced the left bank coil pack today. I drove the car 50 miles and the misfires started happening again. Can anyone help me with any other areas I should be looking at to cure the problem

 

If you have already replaced plugs and coil pack, then the only thing left is the Voltage Transformer.