What Do Your Spark Plugs Do

Spark plugs are essential for the better performance of your car. Without a spark, your car won’t start. They are set to provide a small ignition source to your car’s engine, allowing the fuel to ignite and drive your car’s pistons.
A spark plug is a device for delivering electric current from an ignition system to the combustion chamber of a spark-ignition engine to ignite the compressed fuel/air mixture by an electric spark while containing combustion pressure within the engine.

How long do your Spark Plugs Last?

Luckily, spark plugs don’t require replacement very often and can go years and many miles before replacement is a must.
It is recommended having new spark plugs installed about every 30,000 miles; however, spark plug longevity depends on the condition and type of spark plug and in more modern cars can last even longer. Most new cars also come with a lifetime warranty on spark plugs.

What are the signs of failing spark plugs?

There are several symptoms of failing spark plugs which will help you to determine the problem. If they are fully worn out, then you will not be able to start your car. Here are some signs of failing spark plugs:

  • Sub-optimal fuel consumption

If you noticed that your fuel consumption increases, then the problem is caused by malfunctioning spark plugs. The spark plugs help your car regulate itself, and increased mileage can be a symptom.

  • Slower Acceleration

Spark plugs send additional ignition sparks to your engine when your car is accelerating. If accelerating becomes slower, it may be a symptom of malfunctioning spark plugs.

  • Engine Misfiring

Your vehicle’s engine can misfire because of an issue with your car’s ignition system, and this is because of malfunctioning spark plugs - the spark may have come late, or the spark may have been too large.


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