Spark Plug Torque Settings by NGK
This short video gives a great insight into the importance of using the correct torque setting when replacing spark plugs. Even though it is made by NGK the information can be used for any brand of spark plug. The reason NGK have produced it is incorrect torque settings, whether too tight or too loose is the most common source of spark plug failure. It is not a step by step removal and install training video on spark plugs, it is simply designed to raise awareness of using the correct torque setting. You would not tighten a cylinder head bolt by feel, so treat your spark plugs the same way. Run time 3:10.