What Size Spark Plug Non Fouler For O2 Sensor

Are you trying to figure out the right size spark plug non-fouler for your O2 sensor? You’ve come to the right place! Spark plug non-foulers play a crucial role in maintaining the performance and longevity of your vehicle’s O2 sensor. Selecting the correct size is absolutely essential.

In this handy guide, we’ll delve deeper into the subject, providing you with all the necessary information to make an informed decision. From understanding the function of a spark plug non-fouler to learning how to pick the right size for your O2 sensor, we’ve got you covered. Let’s fuel up your knowledge and drive right into it!

How To Fix A Catalytic Converter Check Engine Code With Spark Plug Non Foulers!

If you’re like most people, you probably don’t know what a spark plug non fouler is. And that’s ok! But if you have an O2 sensor, it’s important to know the right size spark plug non fouler for your vehicle.

A spark plug non fouler is a small device that attaches to the end of your spark plug. It helps prevent build-up on the O2 sensor, which can lead to inaccurate readings and decreased fuel efficiency. There are a few different sizes of spark plug non foulers available, so it’s important to choose the right one for your vehicle.

The best way to do this is to consult your owner’s manual or ask a mechanic. With the right size, spark plug nonfouler installed, you can help keep your O2 sensor clean and working properly. This can save you money in the long run and help keep your vehicle running at its best.

P0420 Spark Plug Defouler

If you have a P0420 error code, it means your spark plugs are fouled. This can happen for a number of reasons, but the most common is that your engine is running too rich. This can be caused by a number of things, including a dirty air filter, bad gas, or even a faulty oxygen sensor.

The good news is that you can usually fix this problem yourself. Start by changing your spark plugs and then checking your air filter. If those don’t fix the problem, try running some injector cleaner through your fuel system. And if all else fails, you may need to replace your oxygen sensor.

What Size Spark Plug Non Fouler for O2 Sensor

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What Size Thread is an O2 Sensor?

Car enthusiasts often ask, “What size spark plug non fouler for O2 sensor?” Understanding the size can be crucial, especially when you’re dealing with an oxygen sensor in your vehicle. The oxygen sensor, also known as O2 sensor, plays a critical role in optimizing your car’s performance and fuel economy.

Typically, spark plug non foulers are used to pull the O2 sensor back and out of the direct flow of exhaust gases for a more accurate reading. The size can greatly influence the effectiveness of this setup. Typically, the common size of a spark plug non fouler for an O2 sensor is 18mm.

However, it is always essential to check the specific requirements of your vehicle’s make and model to ensure the right fit. By knowing the appropriate size, you can not only maintain the efficiency of your vehicle but also prolong the lifespan of the O2 sensor.

How Do You Install a Non Fouler O2 Sensor on a Spark Plug?

Installing a non fouler O2 sensor on a spark plug is actually pretty easy. Most people think that it’s some kind of difficult, technical process, but it’s really not. All you need is a few tools and some patience and you’ll be able to do it yourself in no time.

First, you’ll need to remove the old O2 sensor from the spark plug. You can do this by using a wrench or pliers to loosen the sensor and then pull it out. Next, take the new O2 sensor and thread it into the spark plug hole.

Be sure to hand-tighten only until snug – don’t over-tighten as this could damage the threads. Now all that’s left to do is reconnect the wires to the new O2 sensor and you’re all set! Just remember to double check all your connections before starting your engine, and if everything looks good then you’re ready to go!

What Size Spark Plug Non Fouler For O2 Sensor

Where Do You Put the Defouler in O2?

An oxygen (O2) sensor defouler is a small, inexpensive piece of equipment that helps to keep your vehicle’s O2 sensor working properly. The O2 sensor is responsible for monitoring the level of oxygen in the exhaust gas and sending a signal to the engine control unit (ECU). If the O2 sensor gets dirty or fouled, it can cause the engine to run lean (too much air and not enough fuel) or rich (too much fuel and not enough air).

This can lead to decreased fuel economy and increased emissions. A defouler attaches to the O2 sensor and helps to keep it clean, so that it can continue to do its job properly.

Are Spark Plug Non Foulers Worth It?

If your car has been experiencing issues with fouled spark plugs, you may be wondering if spark plug non-foulers are worth the investment. Fouled spark plugs can cause a number of problems for your car, including decreased fuel economy, increased emissions, and poor engine performance. While non-foulers won’t completely eliminate the problem of fouled spark plugs, they can significantly reduce the frequency with which they occur.

Spark plug non-foulers work by creating a small space between the tip of the spark plug and the combustion chamber. This allows any build-up on the spark plug to be burned off before it has a chance to foul the plug. Non-foulers are especially useful in cars that tend to accumulate deposits on their spark plugs, such as those that run on unleaded gasoline or use E85 fuel.

If you’re considering purchasing spark plug non-foulers, it’s important to make sure that they’re compatible with your vehicle. Mostnon-foulers are designed for specific makes and models of cars, so be sure to check that they’ll work with yours before you buy them. You should also keep in mind that installing non-foulers may require some modifications to your car’s engine compartment; depending on your car, this could mean anything from drilling new holes to disconnecting and reconnecting hoses and wires.

If you’re not comfortable making these kinds of changes yourself, it’s best to take your car to a professional mechanic who can do it for you. Overall, spark plug non-fouler devices can be a helpful way to reduce the likelihood of fouling in cars that tend to experience this issue frequently. They’re relatively inexpensive and easy to install (in most cases), so they’re definitely worth considering if you’ve been struggling with fouled plugs.

What Size Spark Plug Non Fouler For O2 Sensor

Frequently Asked Questions [FAQs]

What is a spark plug non-fouler, and how does it relate to an O2 sensor?

A spark plug non-fouler is a device that is used to reduce the amount of exposure an oxygen (O2) sensor has to exhaust gases. This can prevent fouling and extend the lifespan of the O2 sensor. It’s usually used in vehicles that burn oil or have a slightly rich fuel mixture.

What size spark plug non-fouler do I need for my O2 sensor?

The size of the spark plug non-fouler needed for an O2 sensor may vary depending on the vehicle’s make and model. However, the most common size used is an 18mm non-fouler. It’s best to check the vehicle’s manual or consult with a professional mechanic to determine the correct size.

Can a spark plug non-fouler help with a check engine light issue?

Yes, in some cases, a spark plug non-fouler can help with a check engine light issue. If the check engine light is on due to an issue with the O2 sensor, installing a non-fouler can help to resolve the problem. However, it’s always best to diagnose the exact cause of the check engine light before attempting any fixes.

When should I consider using a spark plug non-fouler for my O2 sensor?

You should consider using a spark plug non-fouler for your O2 sensor if your vehicle is burning oil or running a slightly rich fuel mixture. If your O2 sensor is frequently fouling or failing prematurely, a non-fouler may help to extend its lifespan.

Can I use a spark plug non-fouler on any vehicle?

While a spark plug non-fouler can be used on many vehicles, it may not be suitable for all. The size and type of the O2 sensor, as well as the vehicle’s exhaust system, may affect compatibility. Always check the vehicle’s manual or consult with a professional mechanic to determine if a non-fouler is suitable for your vehicle.


If you’re looking for a spark plug non fouler for your O2 sensor, you’ll need to know what size to get. The most common sizes are 18mm and 14mm. 18mm is the standard size for most vehicles, but 14mm is becoming more popular in newer models. If you’re not sure which size to get, it’s best to consult your vehicle’s owner manual or ask a mechanic.