Only if there's something wrong with your old spark plugs.
Changing your spark plugs could theoretically make your car faster but not enough to make a noticeable difference. Changing your spark plugs when they are worn will increase your fuel mileage slightly.
Gradual lack of power Fuel mileage drops Mileage/age of vehicle Gradual lack of power Fuel mileage drops Mileage/age of vehicle
Start by changing the spark plugs
The gap on the plugs might not be gapped properly.
Changing leads will make ignition system work more efficiently (Coil will not be working so hard to deliver voltage to spark plugs as resistance in new leads will be low). So spark will bebetter. Fuel will burn easier and yes mileage will be improved but not so much that you would see huge gains.
Poor performance, poor fuel mileage, hesitation, rough idle,
yeah they allow the fuel/air mixture to burn more efficiently
Change them at 100,000 miles or sooner if you experience poor performance or poor fuel mileage.
Changing spark plugs and wires on a 2004 Nissan Titan V8 can potentially increase fuel efficiency (mpg) if the old plugs and wires are worn or damaged. Fresh spark plugs ensure better combustion, while new wires improve the electrical connection, leading to more efficient engine performance. However, the extent of the improvement will depend on the overall condition of the vehicle and other factors like driving habits and maintenance. Regular maintenance is key to achieving optimal fuel efficiency.
Could be several causes: Clogged fuel filter. Clogged/dirty fuel injectors. Spark plugs need changing.
incorrect ignition timing, no fuel pressure, or no spark.
Spark plugs can get a brown tint on them when certain additives in the fuel are burned.