The engine in your vehicle is like an orchestra. Every player should be in the right tune to produce good music. You can think of the spark plugs as an integral part of the motor. Spark plugs create miniature lightning strikes inside the combustion chamber to ignite the air and fuel mixture.
And if you know anything about cars, igniting the air/fuel mixture is a good thing. But what happens when the spark plugs are worn out? When is the right time to replace the spark plugs? Can you do it yourself, or should you consult a professional? All the answers are right here.
But first, here’s the answer to the most glaring question of all.
In some modern vehicles, the check engine light or the service light will illuminate when the spark plugs need replacement. But in the absence of such features, how will the average Joe determine the right time to replace the spark plugs?
If you recently bought a used car, you are better off replacing the spark plugs altogether, even though the previous owner swore upon his life that the spark plugs are new. You should also change the oil and oil filter while you’re at it. Buying a new set of plugs is cheap insurance against breakdowns and engine damage.
But if you have a new car, the best way to determine if the spark plugs need to be changed is to consult the owner’s manual. Depending on the type of vehicle, the manufacturer recommends replacing the spark plugs every 30,000 to 80,000 miles. In some cases, a vehicle can go for as long as 100,000-miles before needing a new set of plugs. More reading on best spark plugs here.