A Guide To Ford Spark Plugs

In every internal combustion engine on earth, there’s a set of spark plugs. As a car owner, it’s worth taking the time to understand spark plugs a little better and replace them whenever needed. That’s what this buyer’s guide is for. In this guide, you’ll find information about spark plugs, how they work, how to replace one, and more.

What Is A Spark Plug And Why Is It Important?


A spark plug is a small cylindrical-shaped part that serves two important purposes:

  1. Produce enough spark to ignite the air/fuel mixture
  2. Spark the air/fuel mixture up to 3,000 times per minute to keep the engine running smoothly

The spark plug is screwed into the cylinder head. The top end of the plug is connected to the ignition coil, from which it draws a high voltage electric current. The bottom end has a ground electrode that helps create enough spark to ignite the air/fuel mixture.

To read more about spark plugs and how they work, check out this article: What Are Spark Plugs And Why Does Your Ford Engine Need Them?

Has One Of My Spark Plugs Gone Bad?

Spark plugs wear out over time due to constant exposure to the high temperatures within the combustion chamber. They’re usually replaced after about 50,000 miles. The best way to determine whether a spark plug has worn out is to remove it from the cylinder and then physically examine it.

If you’re wondering whether one of your spark plugs has gone bad, follow the steps in this tutorial: How To Check The Spark Plugs In Your Ford Engine

Are OEM Spark Plugs Better Than Aftermarket Spark Plugs?

New oem spark plugs

Our answer to this question is yes. The spark plug is such an important part of ensuring the smooth operation of your engine that quality should be your highest priority when shopping for replacement plugs. OEM spark plugs are clearly the higher-quality and more affordable option. This article explains why: 3 Reasons Why OEM Ford Spark Plugs Are Better Than Aftermarket Spark Plugs

How Do I Replace My Spark Plugs?

Whether you’re looking to replace one spark plug or all of the spark plugs in your Ford, you can do it right at home. All you need are a few basic tools and about an hour of free time. You can find a complete step-by-step here: A DIY Tutorial On Replacing Your Ford’s Spark Plugs