Home » Guides » How To Calibrate A Spark Plug

How To Calibrate A Spark Plug

Spark plugs are one of the most important components in a car’s engine. They help to create electricity and are responsible for starting the engine. A mis- calibration can cause your car to not start or to suffer from other issues. This guide will teach you how to calibrate your spark plug. By following these steps, you will be able to get your car running smoothly and safely.

What is a spark plug?

A spark plug is the part of your car’s engine that creates electricity when the piston hits the cylinder head. A faulty spark plug can lead to loss of power, misfires, and even an engine seizure. To properly calibrate your spark plugs, you’ll need a volt meter and a set of plugs. First, disconnect the battery cables. Next, unscrew the cap on one end of each plug. Next, use a volt meter to check each plug’s voltage at 0°C (32°F) and at room temperature. Replace any plugs with readings that are below the manufacturer’s specification.

Types of spark plugs

There are many different types of spark plugs on the market, but all of them work the same way. A spark plug fires electricity when it is compressed and then released. This electricity is what powers the engine.

When you are replacing a spark plug, it is important to match the new one to the correct engine. There are three main types of spark plugs: aluminum, nickel-cadmium, and lithium-ion. Each type has its own advantages and disadvantages.

Aluminum spark plugs are the most common type and they work best with gasoline or diesel engines. They have a longer life than other types, but they can wear out faster in high-performance applications.

Nickel-cadmium spark plugs are a good choice for fuel-injected vehicles because they provide good performance and longevity at a low cost. However, they can be less effective with carbureted engines due to their lower voltage range.

Lithium-ion spark plugs are the newest type of plug and they offer both high performance and long life. They should only be used in electric vehicles due to their higher voltage requirements.

How to calibrate a spark plug

If your car has an adjustable spark plug gap, it is important to adjust the gap according to the manufacturer’s instructions. If you don’t have an adjustable spark plug gap, or if you can’t remember how to adjust it, you can calibrate your spark plugs using a spark plug tester.

To calibrate a spark plug, first use the tester to determine the actual firing order of your engine. Next, find the closest gap setting on your spark plug tester to this firing order. Finally, use the specified gap setting on your spark plug tester to fire each of your plugs at that setting. The result should be four almost simultaneous sparks. If there are gaps in between the sparks, you need to adjust your spark plug gap.


If you’ve ever had to replace a spark plug or check the coil wire on your vehicle, then you know that it can be a bit of an ordeal. Luckily, this guide will help you calibrate your spark plug and keep your car running optimally. By following these simple steps, you’ll be able to diagnose problems and optimize your engine performance in no time. Thanks for reading!