How to install a spark plug for a Nissan Sentra:

1. Remove the spark plug from the ignition coil by拔下点火线圈线束插头 and拆卸点火线圈固定螺栓. Check the spark plug for any damage to the terminal, insulation, or electrode.

2. Choose the appropriate tools and assemble them. Remove the spark plug and clean the spark plug hole with a cloth to prevent any objects from falling into the engine.

3. Align the spark plug with the ignition coil and install it. Use a tool to旋入螺栓. Clean the measuring tool and measure the spark plug gap.

4. Check the appearance of the new spark plug for any issues. Insert it into a special holder and旋入火花塞孔. Use a digital torque wrench to set the torque to 25Nm, and then拧紧火花塞. Close the point of ignition, open the engine cover, and install the three-piece set.

5. Use the digital torque wrench to拧紧 to 8Nm. Start the vehicle, clear any errors, and clean the work area.