Spark Plug Replacement

Stay ahead of Car Troubles with Spark Plug Replacement in Plano

Prashant Salla
Prashant Salla5 min read
Stay ahead of Car Troubles with Spark Plug Replacement in Plano

You're driving down the open road, wind in your hair, enjoying the thrill of the journey, when suddenly, your car starts to sputter and lose power.

The once smooth ride becomes a bumpy, frustrating ordeal. You then pull over to the side of the road, frustrated and wondering what could have gone wrong.

The culprit? Worn spark plugs.

This small, seemingly insignificant component can bring your adventure to a screeching halt. 

But fear not! By staying ahead of car troubles with spark plug replacement in Plano, you can ensure a smooth and uninterrupted driving experience.

Replacing Your Spark Plug with Goodhood

When you discover a faulty spark plug, you might feel lost as to where to turn. Fortunately, the good folks over at Goodhood Mobile Auto Repair Services can help!

The technicians at Goodhood offer same-day spark plug replacements in Plano and the surrounding areas. They understand your car is important to your daily life and will work hard to get you back on the road soon.

Goodhood technicians use only the best spark plugs available to ensure a reliable and long-lasting repair.

We also specialize in other services including oil changes, hose and alternator replacement. So reach out to us and have your car looking as brand new as before! 

Signs Your Spark Plugs are Faulty

Detecting faulty spark plugs early on is crucial to preventing further damage to your vehicle's engine.

Here are some signs that indicate your spark plugs may be due for replacement:

Decreased Fuel Efficiency

If you notice a sudden drop in your vehicle's fuel efficiency, it could be a sign of worn-out spark plugs. Inefficient combustion caused by faulty spark plugs increases fuel consumption, resulting in reduced mileage.

Your spark plug wires or the ignition coil can also be to blame.

Engine Misfires

Engine misfires occur when the spark plugs fail to ignite both the air and fuel mixture at the right time or fail to ignite it at all. This can cause your engine to run unevenly or stutter during acceleration. You may notice a loss of previous power and notice jerking or hesitation while driving.

Rough Idling

Faulty spark plugs can disrupt the smooth idle of your engine. If your car's engine is running rough or vibrating excessively while stationary, it could be a symptom that the spark plugs are not firing properly.

Difficult Engine Start

If you find it increasingly difficult to start your vehicle, especially in colder weather, worn-out spark plugs could be the culprit. Faulty spark plugs make it harder for the engine to generate the initial spark needed to start the combustion process.

Engine Performance Issues

A decline in overall engine performance, such as sluggish acceleration, reduced power, or a general lack of responsiveness, can be indicative of faulty spark plugs. As the spark plugs wear out, they struggle to provide a consistent and strong spark, impacting the engine's performance.

Increased Exhaust Emissions

Faulty spark plugs can lead to incomplete combustion, resulting in higher levels of unburned fuel being expelled through the exhaust system. This can cause your vehicle to produce excessive black smoke or emit a noticeable gasoline odor from the tailpipe.

Engine Warning Light

In modern vehicles, a malfunctioning spark plug can trigger the car check engine light on your dashboard. 

If this light illuminates, it's vital to have your vehicle inspected by a qualified mechanic to determine the cause, which may include faulty spark plugs.

How Professionals Replace Spark Plugs

When it comes to spark plug replacement, entrusting the job to a professional mechanic or automotive service center in Plano ensures that the task is performed with precision and expertise.

Here's a step-by-step overview of how professionals typically replace spark plugs:


A professional mechanic will begin by inspecting your vehicle's existing spark plugs. They will check for signs of wear, such as eroded electrodes or excessive carbon buildup. This inspection helps determine if the spark plugs are indeed due for replacement and if any underlying issues need to be addressed.

Gathering the Necessary Tools

The mechanic will gather the appropriate tools required for the spark plug replacement. This typically includes a socket wrench, a spark plug socket, and an extension bar. They will also ensure they have the correct replacement spark plugs recommended by your vehicle's manufacturer.

Disconnecting the Battery

To ensure safety and prevent any electrical mishaps, the mechanic will disconnect the negative terminal of the vehicle's battery. This step minimizes the risk of accidental electrical contact while working on the spark plugs.

Removing the Old Spark Plugs

Using a socket wrench and spark plug socket, the mechanic carefully removes the old spark plugs one at a time. They will take care not to damage the surrounding components or drop any debris into the cylinder.

Inspecting and Preparing the New Spark Plugs

Before installing the new spark plugs, the mechanic will inspect them for any defects or damage. They will also check the spark plug gap, ensuring it matches the specifications recommended by the vehicle manufacturer. If necessary, they will adjust the gap using a spark plug gap tool.

Installing the New Spark Plugs

With the new spark plugs prepared, the mechanic will install them one at a time, threading them by hand to avoid cross-threading. Once snug, they will use the socket wrench and spark plug socket to tighten the spark plugs to the manufacturer's recommended torque specifications. Over-tightening can cause damage while under-tightening can lead to poor electrical contact.

Reconnecting the Battery

After all the new spark plugs are installed, the mechanic will reconnect the negative terminal of the vehicle's battery, ensuring a secure connection.

Final Inspection and Testing

The professional will conduct a final inspection, checking that all connections are secure and verifying that no components were left loose during the spark plug replacement process. They may also perform a test start-up to ensure the engine is running smoothly and that the new spark plugs are functioning correctly.


Spark plugs are a key component of the ignition system in your vehicle, so it's important to replace them when you notice any issues or signs of wear.

 By staying ahead of car troubles with spark plug replacement in Plano, Tx, you can avoid costly repairs and ensure a smooth and uninterrupted driving experience.

If you're in need of spark plug replacement, the professionals at Goodhood Mobile Auto Repair Services are here to help. With same-day spark plug replacement and experts to guide you throughout the process, you can rest assured that your car is in the right hands!

Frequently Asked Questions

How often should spark plugs be replaced?

On average, spark plugs should be replaced every 30,000 to 100,000 miles. But this depends on the vehicle type and the spark plug used. It's best to consult with your mechanic or refer to your owner's manual for specific recommendations.

What are the symptoms of worn-out spark plugs?

Common signs that you have damaged spark plugs include decreased fuel efficiency, engine misfires, rough idling, difficult engine start, engine performance issues, increased exhaust emissions, and a lit check engine light.

Should I replace my spark plugs myself?

Replacing your own spark plugs can be dangerous and time-consuming if you don't know what you're doing or don't have the right tools. It's best to entrust this task to the experts at Goodhood Mobile Auto Repair Services. They'll ensure a quick turnaround time and expert workmanship so that you're back on the road in no time!