Spark Plugs

Fire Up Your Engine with Quality Spark Plugs

Have you ever considered the lifespan of your spark plugs or when they might need replacement? Spark plugs ignite the air-fuel mixture inside your engine's combustion chambers. At Greenville Nissan, we stock genuine Nissan spark plugs engineered for your Frontier and Murano engines. Aftermarket spark plugs often use incorrect heat ranges or electrode materials that cause misfires and poor performance.

What Spark Plugs Do

Spark plugs create electrical arcs that ignite compressed air-fuel mixtures in combustion chambers. The center electrode receives high voltage from the ignition system while the ground electrode completes the circuit. The precise gap between electrodes determines spark characteristics and combustion efficiency. Different electrode materials like copper, platinum, or iridium offer varying durability and performance. The insulator prevents electrical leakage while withstanding extreme combustion temperatures. Each cylinder requires properly functioning spark plugs for smooth engine operation.

Why Spark Plugs Wear Out

Electrode erosion from repeated electrical arcing gradually widens the gap beyond specifications. Carbon deposits from incomplete combustion coat electrodes and reduce spark intensity. Heat stress causes insulator cracking that allows voltage to leak before reaching the gap. Generic aftermarket plugs frequently use lower-grade materials that erode faster than factory specifications. Contamination from oil consumption fouls plugs and prevents proper ignition. Wrong heat range selection causes pre-ignition or fouling problems.

When Spark Plugs Need Changing

Engine misfires, rough idle, or reduced power indicate worn or fouled spark plugs. Difficult starting, especially in cold weather, suggests weak spark from worn electrodes. Decreased fuel economy results from incomplete combustion due to poor spark quality. Most spark plugs require replacement every 30,000 to 100,000 miles depending on electrode material. Copper plugs need more frequent service than platinum or iridium versions. Replacing spark plugs along with ignition system maintenance ensures reliable starting and smooth engine performance.

Trust Greenville Nissan to provide the quality components that'll keep you moving forward.