How Long Do Spark Plugs Last? 

When you take good care of your spark plug’s life, it can last a very long time. Usually, manufacturers suggest replacing your spark plugs every 30, 000 miles. Replacement during this duration is crucial to help prevent issues with cylinder or combustion chamber, carbon fouling and more.

What are spark plugs?

A spark plug is a device which uses the spark of electricity to ignite the combustion needed to start your vehicle. Spark plugs emit a bolt of electricity across a small gap that ignites the fuel and air. It puts the pistons in motion and gets your vehicle’s engine to start.

Spark Plugs Lifespan

The life span of your vehicles’ spark plug depends on many characteristics which include the car engine condition, material used, and running conditions such as fuel quality, climate, and so on. The average lifespan of a regular spark plugs is not above 30, 000 miles, and platinum and iridium cannot exceed 55,000 miles.

Spark Plug Life Warning Signs

The source of your vehicle engine’s energy to start running comes from the spark plugs. So, if your spark plugs need replacement, your vehicle’s engine is at risk. That’s why when you are a vehicle owner or driver, you must know the warning signs of your spark plug’s life.

Here are some crucial signs to know whenever you need to replace your spark plugs:

• Acceleration problem

When your vehicle’s acceleration performance is poor, your spark plug might be damaged. A spark plug that is filled with dirt and oil cannot effectively create a spark which can affect your car’s acceleration performance.

• Increased gas consumption

When you witness your vehicle’s gas consumption suddenly increases, it is  sometimes caused by dirty spark plugs. Bad spark plugs can affect your vehicle’s gas consumption.

• Difficult to start

Are you struggling to start your vehicles? You may directly assume it’s a dead battery or you’re out of gas, but poor spark plugs might be the reason. When your spark plugs can’t ignite a spark to start the combustion, you can’t go anywhere.

• Engine Rough Sound

Your vehicle’s spark plug is in good condition when the engine sounds stable and smooth. When a spark plug functions poorly, your engine sounds rough while running and shows unpleasant vibrations.

Factors Affecting your Spark Plugs’ Life

Your vehicle’s spark plugs need to be clean, with no damage on the electrodes for your vehicle to run smoothly. Whenever a spark plug’s performance is poor, there can be specific reasons affecting it.

Let’s take a look at these factors below:

• Carbon Foul

A carbon buildup (black-colored, dry soot on the insulator tips and electrodes) minimizes your spark plugs’ life. It is mostly the reason why your vehicle is having a hard start, decreased acceleration and more. A dirty air filter, too much air/fuel mixture, aggressive driving at low speeds, and dirty fuel injectors are the reasons why a carbon build happens at your vehicle’s spark plug.

• Combustion Chamber Oil Leaks

One of the major causes of spark plugs problems is when the engine oil reaches into the combustion chamber. When oil keeps on entering into the combustion chamber, it builds oil dirt to the tip of the spark plug, which can lead to failure over time.

• Repeated Overheating

Frequent overheating of the spark plug tip can lead to premature plug failure. A malfunctioning cooling system, and pre-ignition are usually the causes of overheating. Pre-ignition builds up heat in the combustion chamber.

Also, when the cooling system is poorly functioning, the spark plugs and engine overheat. Overheating can also wear out the spark plugs quickly.

How can you preserve and extend spark plugs’ life?

You can preserve the life of your vehicle’s spark plugs in many ways. It’s very important to follow your vehicle’s manufacturer’s recommended maintenance schedule in replacing the spark plug.

Learn from the tips below:

• Keep the mounting area clean.

It’s necessary to keep the spark mounting area clean to prevent the accumulation of residue and dust in the cap. It’s also important to avoid misalignment. Always clean up the residue before putting back the spark plug to its terminal.

Do this step correctly so you can always enhance the power of your vehicle as well as extend the spark plugs’ life.

• Check for new plug damage regularly.

When your vehicle hit something or dropped, always check for any crack in the porcelain. Make sure the center electrode aligns with the side electrode. If it’s not aligned well, reposition it.

• Keep the spark gap well-balanced.

Maintaining a balanced spark gap between the two electrodes is necessary. If there’s a small imbalance with the gap, the spark plug weakens. Also, a huge gap can prevent spark from happening. Always refer to the user’s manual to properly balance the gap between the electrodes.

FAQs

Frequently Asked Questions (FAQs)

What should you do if your spark plugs’ life is at risk?

When the electrode or tip of your spark plug shows excessive tear, your spark plugs’ life is at risk and must be replaced.

What happens if you don’t replace your spark plugs?

If you don’t replace your spark plugs, the oil and dirt buildup can create misfire. When this happens, the unburned fuel in the cylinders can damage the cylinder walls. It can lead to high pressure and might result in engine failure.

Conclusion

Many signs show your spark plugs’ life is at risk or need replacing. Modern spark plugs can last definitely longer than those created 30 years ago, but still don’t last a lifetime. That’s why you need to replace your spark plugs regularly. Always refer to the user’s manual.