2. When replacing spark plugs, you need to buy new spark plugs, set the gap and screw them in place of the old ones, replacing each spark plug separately. The spark plug type is indicated on the plate on the back of the hood.
3. Check the gap between the electrodes of the new spark plugs with a round feeler gauge, if necessary, bend the side electrode and set the standard gap (photo).
4. On a cold engine, clean the areas around the spark plugs, remove the wire by the tip (photo), unscrew the spark plug and screw in a new one by hand or with a hose (photo). Tighten the spark plug to the specified torque.
5. Check the condition of the tip and put it on the spark plug.
6. Replace the remaining spark plugs in the same way.
[The publication is reprinted from this resource: nissanbook.ru]
7. Check the condition of the insulator skirt of the removed spark plugs, which can be used to determine the general condition of the engine.
42.3a Checking the spark plug gap using a round gauge
42.3b Adjusting the spark plug gap
42.4a Removing the wire tip using special pliers
42.46 It is recommended to tighten the new spark plug using a hose