After replacing the spark plug and ignition coil, the accelerator pedal speed decreases.

See if the spark plugs match, and then check the throttle.

There is nothing wrong with the spark plug. Check whether there is too much carbon deposit on the throttle and engine, and clean the carbon deposit. It is recommended to go to a regular repair shop or 4S shop for maintenance.

Spark plug, also known as burner, is an important part of engine ignition system. With the spark plug, the engine can continue to work and output. Usually, the service life of resistance spark plugs is 20,000 kilometers, that of Bojin spark plugs is 40,000 kilometers, and that of iridium spark plugs can reach 60,000 to 80,000 kilometers.