It delivers current from an ignition system to the combustion chamber of a spark-ignition engine to ignite the fuel/air mixture by an electric spark. while containing combustion pressure within the engine.
Spark plugs may also be use in other applications such as furnace; In this case, we refer to them as flame igniters.
Changing the spark plugs is a way of assuring top efficiency and performance. The misfires that may occur will increase exhaust emission as well as harm gas mileage. … Less voltage is required in the ignition system because of the efficiency of the new spark plugs.
Common signs of faulty spark plugs include:
slow acceleration, loss of power, poor fuel economy, engine misfires, and difficulty starting the car.