To change the spark plug seals on a Nissan Pulsar N15, first, ensure the engine is cool and disconnect the negative battery terminal. Remove the ignition coil or spark plug wires, then unscrew the spark plugs using a spark plug socket. With the plugs out, carefully remove the old seals from the valve cover and replace them with new ones. Reinstall the spark plugs, reconnect the ignition components, and finally, reconnect the battery terminal.
Possibly not. For on some cars, the ethanol component can damage seals. But you should check with the car manufacturer, in writing!
Valve seals If the oil is on the top of the plugs, there could be valve cover plug tube seals to change.
because your valve cover seals are bad... fix it before you will get issues with coil packs... and change the spark plugs while at it...
2.5 engine you can only buy a new valve cover from dealer
The headlight bulb seals in the Nissan Micra can be very tight. If you cannot loosen them, it is best to take the car to a mechanic to avoid any damage.
Take it to a reputable oil change station or your Nissan dealer... Only do a "flush" if the vehicle has LESS than 75k miles. Otherwise, you'll develop leaks around the seals.
bad valve seals, bad piston rings bad valve seals, bad piston rings
There are seals under the valve cover that need replaced to repair oil on the spark plugs.
There are many transmission seals. Front/Rear and pan seal are some. There are also internal seals.
Spark plug tube seals need changing
Usually the valve seals or rings.
Time to replace seals, this usually causes misfire.