What symptoms indicate that the spark plugs should be replaced
The purpose of spark plug is to ignite, when the cylinder is running to the top dead center, through the spark plug ignition, gasoline can be burned to produce energy. Therefore, the better the spark plug ignition ability, if the spark plug ignition ability is poor, will miss the best ignition time, leading to incomplete combustion of gasoline, and the gasoline after combustion is not fully used to do work. The intuitive feeling is that the car has poor power, high fuel consumption, and there will be a lot of invisible carbon accumulation. Replacing spark plugs is also a regular maintenance item. It needs to be replaced regularly. How many kilometers should be replaced? What symptoms of the car must be replaced? There is a general mileage, the ordinary spark plug about 40,000 kilometers replacement, platinum plug 80,000-100,000 kilometers replacement, the normal situation of the car to follow this mileage is ok. There are a lot of maintenance manual recommended replace...