Updated at: 12-03-2022 - By: micdot

In the event that your spark plug was torn out of the cylinder head, it can appear to be a nuisance. Unfortunately, owners of engines with removable cylinder heads are more likely to experience this problem. It’s important to know why and how this happens if it ever happens to you. So, the question is:

What should you do if your car’s spark plug blows out of the cylinder head? As a result of repeated use, the strands became tangled, crossed, or galled. As a result, your spark plug threads were damaged. It’s also because to the cylinder’s heat and pressure. If this occurs, you’ll need to consult a mechanic or perform a spark plug replacement on your own.A faulty spark plug can cause a wide range of problems for your car. As a result, if it ever occurs to you, you must address the issue as quickly as possible. Unchecked, it can develop into a more serious problem and become rather expensive.In this post, you’ll learn more about this topic, as well as get some answers to your queries about it. As a result, you’ll know more about your spark plug and how to handle it in the event that it fails.

Let’s get started right away!

What Causes a Blew Out Spark Plug?

A spark plug blowout can be caused by a variety of factors. The most common cause is a loose plug, although this isn’t the only one. When you tighten an engine plug too tightly, a spark plug may blow. Not tightening it enough will cause it to loosen and eventually blow out.

In general, both the spark plug and the engine plug can be damaged by poor tightening and connection. If this happens, the spark plug will not be able to supply the engine with electricity. In the worst-case scenario, the failure of the transfer could cause the spark plug to explode. Overuse and a steady inflow of dirt into the engine are two other contributors to this problem.

Can You Drive With a Blown Out Spark Plug?

The short answer is that you can drive with a blown spark plug, but you should avoid doing so. It’s not a good idea for an engine to continue to run after the spark plug has blown, as this might cause severe damage to the engine. Generally speaking, if you suspect that your spark plug has blown, you should pull over and put the car in park. It’s not safe to remove the plug while driving since it could catch fire.

In addition, allowing the engine to cool before removing the blown spark plug’s inductor wires and coil is the best course of action. Otherwise, you run the risk of damaging your engine by letting it run.

How Do You Fix a Blown Out Spark Plug?

A blown spark plug may have made you think about changing it yourself rather than paying for a professional. To make sure you’re led at all times, familiarize yourself with the operation of your spark plug by following these steps. However, if you’ve never worked in this field before, it’s best to let someone else handle it.

Let’s get started now, if you’re up to the challenge.

Clear the entire area.

The spark plugs are likely to be replaced first by a mechanic. After meticulously cleaning up the area where the wind came from, he’ll do just that. Spark plug problems are most commonly caused by a failure of the connectors. Dirtiness is the most common source of this issue.

As a result, clearing everything out and making sure it’s clean all around should be your first order of business. Even if your engine is completely clogged, it will help you increase its performance, even if it’s just a little bit.

Check the spark plug.

Look for symptoms of damaged or blown out spark plugs after cleaning the area. An old plug that has to be replaced is usually extremely black. You can tell if something needs to be replaced by its appearance. You should remove it as soon as you suspect something is wrong and perform a visual inspection of the engine heads where the spark plug was inserted. Compression testing of the ignition wires is also required.

The threads of the plugs need to be treated with anti-seize before continuing. After that, you’ll have to reinstall the engine’s spark plugs. Make sure the engine starts and operates smoothly before you take the car out for a spin.

How Much Does It Cost to Fix a Blown Out Spark Plug?

A blown-out spark plug’s repair can cost a lot because of the time it takes to replace it. Thus, a competent mechanic or a professional can fix your car for $500 to $1000. Depending on the mechanic’s fees, it could cost a little more or a little less. The first insert is included in the repair expenses, and the second and third inserts may be less expensive if the remainder of the holes require the same.

In short, you need to plan for the possibility of being charged for such a fee so that you won’t be surprised if you are.

How Do You Know If You Blew a Spark Plug?

A blown-out spark plug can cause a number of visible problems in an engine. Check out these symptoms to determine whether or not your spark plug has failed, and you’ll know for sure.

Poor fuel efficiency

Spark plug problems can be suspected if you’re guzzling more gas than usual. Spark plugs that have blown out will make your engine work harder in general. Of other words, the combustion chamber in your car isn’t able to adequately burn the fuel.

If a result, as gas prices rise, you’ll feel the pinch of failing plugs in your pocketbook.

Misfires of the engine

A faulty spark plug can cause an engine misfire for a variety of reasons. Spark plug failure is a common cause of engine misfires. After a few seconds, the engine will slow down before picking back up. You may hear a snap as the engine loses and regains synchronization.

The catalytic converter is destroyed when a car misfires, releasing raw gasoline into the exhaust.

Check engine lights turned on.

Whenever there is an issue with your car’s engine, the check engine light will come on. Spark plugs are one of such issues. This means that even if you forget to take your car in for routine maintenance, the algorithm will still alert you to potential problems. You should always keep an eye out for the “Check Engine” light as a general rule of thumb. In this case, it’s a signal that it’s time to act.

Loud sounds from the engine

When your spark plug burns out, you’ll also hear a lot of noise. If one of the spark plugs fails, you’ll hear a noise. The type of engine you use is immaterial. If you have a four, six, or eight-cylinder car and your spark plug has blown, it will produce a sound.

It’s possible that odd noises like rattling will be heard if the efficiency of one cylinder is diminished.

Acceleration struggles

If you can’t seem to get your car to go faster even after pressing the gas pedal all the way down, you most likely have a blown spark plug. It is no longer possible to ignite the fuel-air mixture in the combustor with a worn out spark plug.

When an automobile is unable to accelerate properly, this is one of the most obvious indicators.


In a nutshell, spark plugs can fail for a variety of reasons, the most common of which being poor tightening and excessive use. The spark plug can also become threaded or galled. If subjected to high temperatures and pressure, it may also be harmed. It doesn’t matter what the cause is, you need to fix a blown spark plug as quickly as possible. You’ll almost always have to get a new one. The process of replacing the spark plugs is simple. Because it doesn’t necessitate a lot of expensive equipment or much training, it’s doable by the majority of people. Even yet, when it comes to plug selection and re-installation, you must exercise caution. Do-it-yourselfers can replace their own spark plugs. In the end, the best option is to hire a professional if you’re not confident in your own abilities.