- Candele Auto

Car Spark Plugs: What They Are and When to Change Them

Spark plugs are essential components for the functioning of the internal combustion engine. But what exactly are they and why is it important to keep them in good condition?

What Are Spark Plugs?

Spark plugs, commonly known as car spark plugs, are small devices installed in the engine that have the task of igniting the mixture of air and fuel inside the cylinders. This ignition process is crucial for combustion and, therefore, for the operation of the engine.

Each car spark plug is composed of:

• Center electrode : A small metal tip that emits a spark.
• Ground electrode : Located at the bottom of the spark plug, to which the spark is attracted.
• Ceramic insulator : Isolates the center electrode from the metal part of the spark plug to prevent short circuits and to keep the spark concentrated.

Function of Car Spark Plugs

When the engine is running, the spark plugs emit an electric spark that ignites the air and fuel mixture inside the engine's cylinders. This creates the explosion that pushes the piston down, generating power and making the car run. If the spark plugs are not working properly, the engine may have difficulty starting, run rough, or lose power.

When to Change Spark Plugs?

The lifespan of car spark plugs can vary depending on the type and model of the vehicle, but generally, it is advisable to change them every 30,000-50,000 kilometers. However, it is always best to follow the specific recommendations of the vehicle manufacturer.

Here are some signs that indicate the need to change the spark plugs:

• Difficulty starting : If the engine has difficulty starting or takes several attempts, it could be a sign that the spark plugs are worn.
• Misfire : If your engine is jerky or misfiring, the spark plugs may be the problem.
• Excessive fuel consumption : Worn spark plugs can cause inefficient combustion, leading to increased fuel consumption.
• Exhaust Fumes : If you notice exhaust fumes that seem thicker or different in color, the spark plugs may be the cause.

How to Change Spark Plugs

Changing spark plugs can be done by a professional mechanic or as a DIY project if you have a good understanding of the engine. Here are the general steps:

1. Turn off the engine and let it cool .
2. Disconnect the spark plug wires .
3. Remove worn spark plugs using a spark plug wrench .
4. Install the new spark plugs , screwing them in by hand and then tightening them with the wrench.
5. Connect the spark plug wires .

Remember to consult your vehicle manual for any specific instructions and seek professional help if necessary.

In conclusion, keeping your spark plugs in good condition is essential for the proper functioning of your engine and for ensuring a smooth and safe ride. Check them regularly and replace them according to the manufacturer's recommendations to avoid problems and improve the performance of your vehicle.