Spark plug NGK DCPR7E with spark plug wrench socket magnetic

Has your old spark plug given up the ghost? Spark plugs are a precision component in the engine and should be replaced regularly, even if they aren't broken. They ignite an air-fuel mixture in the engine and, depending on the manufacturer, last between 30,000 and 60,000 kilometers before needing to be replaced. Iridium and platinum spark plugs last even longer. The age of the spark plugs isn't the determining factor for when to replace them; mileage and wear and tear are the primary factors. If they aren't replaced, it can lead to misfiring, reduced engine performance, starting problems, and increased fuel consumption. Even a cursory glance can tell whether the spark plug is broken. It will be smeared with oil, charred, or the contact will have a brownish color (a sign that it is beginning to oxidize).