Method for installing spark plugs on a cylinder head of an internal combustion engine, and internal combustion engine

A method for installing a spark plug on a cylinder head of a combustion chamber of an internal combustion engine, the method comprising:

• incorporating an oriented thread on the spark plug and a corresponding internal thread in a hole in the cylinder head of the internal combustion engine for receiving the spark plug;
• arranging a sealing element between a contact surface of the cylinder head and a shoulder of the spark plug;
• inserting the spark plug in the hole in the cylinder head and screwing the thread of the spark plug into the internal thread of the hole;
• and
• finely aligning the spark plug in terms of a position with respect to an angle of rotation relative to the combustion chamber, wherein the sealing element is pressed during the fine alignment until a final angular position of the spark plug is reached,
• wherein a coarse alignment of the rotation angle position of the spark plug, when it is being screwed into the cylinder head, is carried out under torque control and the fine alignment of the spark plug is carried out under control of the angle of rotation.