Spark plugs are only found in petrol engines. Their purpose is to ignite the air/fuel mixture in the combustion chamber to start the engine. To ignite the mixture, the plugs let off a little spark which allows the air/fuel mixture to explode. For that spark, the plugs are powered by the HT leads.
Spark plugsare constantly subjected to rather extreme temperatures (varying from -50°C to plus 1000°C) and high voltage current up to 30 000V. All this causes your spark plugs to wear. They will therefore regularly need replacing; every 12 500 to 30 000 miles. Fortunately, spark plugs are not very expensive. Prices vary between £ 2.20 and £20. To determine which spark plugs you need for your Bmw, please select the model and engine type of your car into the menu.
Spark plugsare constantly subjected to rather extreme temperatures (varying from -50°C to plus 1000°C) and high voltage current up to 30 000V. All this causes your spark plugs to wear. They will therefore regularly need replacing; every 12 500 to 30 000 miles. Fortunately, spark plugs are not very expensive. Prices vary between £ 2.20 and £20. To determine which spark plugs you need for your Bmw, please select the model and engine type of your car into the menu.