How Much does it Cost to Replace Spark Plugs and Coils?

In this article, the question “How Much does it Cost to Replace Spark Plugs and Coils?” would be answered in detail. In addition to this, you would learn more about the spark plugs and the ignition coils in your car. So, you should keep on reading to the end.

How Much does it Cost to Replace Spark Plugs and Coils?

The spark plugs and ignition coil work together to make the spark ignition cycle of the engine happen. Every time you switch on the engine of your car, this cycle is completed. Having known this, you should replace these parts as soon as they get bad.

How Much Does it Cost to Replace Spark Plugs and Coils?

The cost of a new spark plug and coil costs about $200. This price varies and is largely dependent on the make and model of the car.

You should also contact your local auto repair shop to get the cost for the labor fee. With this, you can get the exact estimate of the spark plug and coil replacement cost. Having known this, you should read on to learn more about the spark plugs and coil.

What is a Spark Plug?

A spark plug is a component that delivers the current from the ignition coil to the combustion chamber. This current delivered to the combustion chamber ignites the fuel in the engine with an electric spark.

There is usually a gap that is maintained between the spark plug’s center and the side electrodes in the engine. When this standard is not met, the tip of the plug would be stressed and this wears out the spark plug over time.

Other factors could also cause a bad spark plug. To learn more about this, keep on reading.

Causes of Bad Spark Plugs

It is important for you to know what causes a bad spark plug. This would help you take necessary precautions to help increase its life span.

The causes of bad spark plugs include:

  • Constant use of leaded gasoline. When you use leaded gasoline constantly, it causes lead to building up in the engine. This lead contents may also find their way to the spark plugs. If it does, it causes the spark plugs to wear out faster.
  • A Loose wire connection can also wear out your spark plug with time. This is because when your car needs to be ignited, the stress on the spark plug would be increased.
  • Overheating of the engine. An overheating engine caused by a faulty cooling system can affect your spark plugs.
  • Inappropriate spark plugs gap. This is one of the major causes of a bad spark plug. Generally, the tip of your spark plug has a standard gap. If this gap is not maintained when it is installed in the engine. It increases the stress on the spark plug and wears it out.
  • A build-up of carbon and oil on the spark plug tip also affects the life span of this device. These are all by-products of combustion and if they find a way to the tip of the spark plug, they would cause stress on it.
  • The type of Engine oil you use for your car may also affect the lifespan of your spark plugs.

These are generally what cause a bad spark plug.

What is an Ignition Coil?

The ignition coil is an automotive device that amplifies the current received from the car’s battery. After this, it transmits it to the spark plug to finish the work of igniting the car.

Having known this, you may be wondering “What causes a bad ignition coil?”. The causes of a bad ignition coil are similar to the causes of a bad spark plug.

Symptoms of Bad Spark Plugs and Coils

The symptoms here mean the tell-tale signs that indicate that the spark plug and coil of your vehicle need a replacement. Some symptoms of bad spark plugs and coils include:

  • “Check engine lights” on your dashboard.
  • Engine misfiring.
  • Poor vehicle performance.
  • Increased fuel consumption.
  • Difficulty in starting the car.
  • Misfiring engine.
  • Jerking and vibration when driving.

When you notice these signs, you should take your car to the mechanic to have it checked. If the spark plugs and coil are faulty, you should book an appointment for a replacement service.

The Spark plugs and the ignition coil are two important automobile components that work together to ensure that your car starts when it should. Having known this, proper maintenance should be carried out on your car regularly.


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