Your spark plug manufacturer would recommend your replacement schedule.
Replace the spark plugs,spark plug wires, fuel filter, oil, and oil filter. Mr.brown
You have a misfire on cylinder number 2. Start with replacing the spark plugs. That's a big job on those vehicles, so the spark plugs that are in there are probably the original ones.
Aprox $350 parts and labor just to replace the spark plugs.
normally around 100K
After 105,000 miles. Nissan Maxima spark plugs are platinum-tipped and lasts for many years.
You can find the spark plugs for your 2002 Nissan Pathfinder on each side of the engine. The spark plugs will be near the top of the engine. A six-cylinder engine will have three spark plugs on each side.
factory recomends every 30,000 miles or 60,000 if you are running platinum plugs.
The spark plug gap, for your 1997 Nissan, is .009. Most spark plugs will be pre-gapped when purchased from the manufacturer.