How to Change Spark Plugs on 2018 Chevy Equinox? A Step-by-Step Guide

ByTony Markovich Published

The heart of your 2018 Chevy Equinox beats with the power of its engine, and like any complex machine, it relies on precise components to function optimally. Among these crucial parts, the spark plugs play a vital role in igniting the air-fuel mixture, ultimately driving your vehicle forward. Over time, these tiny but mighty components wear down, leading to decreased performance, fuel efficiency, and even potential engine damage. Understanding how to change spark plugs yourself can save you money on mechanic fees and empower you with valuable knowledge about your vehicle. This comprehensive guide will walk you through the process step-by-step, equipping you with the confidence to tackle this essential maintenance task.

Importance of Spark Plugs

Spark plugs are the unsung heroes of your engine, responsible for the initial spark that ignites the compressed air-fuel mixture within each cylinder. This controlled explosion propels the pistons, generating the power that moves your vehicle. When spark plugs are worn or fouled, they struggle to create a strong enough spark, leading to a cascade of negative effects:

  • Reduced Engine Performance: A weak spark results in incomplete combustion, causing a loss of power and acceleration.
  • Decreased Fuel Efficiency: The engine has to work harder to compensate for the inefficient combustion, leading to increased fuel consumption.
  • Rough Idling and Engine Misfires: Inconsistent spark delivery can cause the engine to shudder or stall, especially at idle.
  • Increased Emissions: Incomplete combustion releases more harmful pollutants into the atmosphere.
  • Potential Engine Damage: Over time, severe spark plug issues can lead to engine overheating, knocking, and even catastrophic failure.

Regular spark plug replacement is crucial for maintaining optimal engine performance, fuel economy, and longevity.

Tools and Materials Needed

Before you begin, gather the necessary tools and materials to ensure a smooth and successful spark plug replacement:

ToolDescription
Spark Plug SocketA deep socket designed to fit the spark plug.
RatchetA handle that attaches to the spark plug socket for turning.
ExtensionAn extension bar that connects to the ratchet, providing additional reach.
Torque WrenchA tool for tightening the spark plugs to the manufacturer’s specified torque.
Gap GaugeA tool for measuring and adjusting the gap between the spark plug electrodes.
Wire BrushFor cleaning the spark plug wells.
Dielectric GreaseA protective coating for the spark plug threads.
Replacement Spark PlugsPurchase the correct spark plugs for your 2018 Chevy Equinox. Refer to your owner’s manual or a reputable auto parts store for the recommended type and gap.

Step-by-Step Guide

Preparation

Park your Equinox on a level surface, engage the parking brake, and disconnect the negative battery cable to prevent electrical shocks. Allow the engine to cool completely before working on the spark plugs.

Locate the Spark Plug Wells

The spark plug wells are located on the top of the engine, typically near the center. Consult your owner’s manual for the exact location on your 2018 Chevy Equinox. (See Also: What Causes 2 Stroke Spark Plugs To Foul? – Troubleshoot Your Engine)

Remove the Ignition Coils

Each spark plug is connected to an ignition coil. Carefully disconnect the electrical connector from each coil. Note the coil position for proper reinstallation.

Remove the Spark Plugs

Insert the spark plug socket onto the top of a spark plug. Securely attach the ratchet and extension to the socket. Turn the socket counterclockwise to loosen the spark plug. Avoid over-tightening or using excessive force.

Once the spark plug is loose, carefully remove it by hand. Inspect the removed spark plug for signs of wear, damage, or fouling. This can provide valuable insights into the overall engine health.

Clean the Spark Plug Wells

Use a wire brush to remove any dirt, debris, or carbon buildup from the spark plug wells. A clean well ensures proper seating and prevents potential issues.

Install the New Spark Plugs

Apply a thin layer of dielectric grease to the threads of each new spark plug. This helps protect the threads from corrosion and ensures a good electrical connection. Insert the spark plug into the corresponding well by hand, ensuring it is seated straight.

Tighten the Spark Plugs

Use the torque wrench to tighten each spark plug to the manufacturer’s specified torque. Refer to your owner’s manual for the exact torque value. Over-tightening can damage the spark plug threads or the engine block.

Reconnect the Ignition Coils

Reconnect the electrical connectors to the ignition coils, ensuring they are securely fastened. Double-check that all connectors are properly aligned. (See Also: Can Bad Spark Plugs Cause Car to Shut Off? The Surprising Answer)

Reconnect the Battery

Reconnect the negative battery cable. Start the engine and allow it to idle for a few minutes to ensure the new spark plugs are functioning correctly.

Inspect for Leaks

Visually inspect the spark plug wells and surrounding areas for any signs of oil or coolant leaks. Address any leaks promptly to prevent further damage.

Tips for Success

Here are some additional tips to ensure a successful spark plug replacement:

  • Work in a clean and well-ventilated area.
  • Use high-quality spark plugs and tools.
  • Wear safety glasses to protect your eyes from debris.
  • Dispose of old spark plugs properly.
  • Consult your owner’s manual for specific instructions and torque specifications for your 2018 Chevy Equinox.

Conclusion

Replacing spark plugs is a fundamental maintenance task that can significantly impact the performance, fuel efficiency, and longevity of your 2018 Chevy Equinox. By following this comprehensive guide, you can confidently tackle this job yourself, saving money and gaining valuable knowledge about your vehicle. Remember to always use the correct tools, consult your owner’s manual, and take necessary safety precautions. With proper care and maintenance, your Equinox will continue to run smoothly for years to come.

Frequently Asked Questions

What is the recommended spark plug gap for my 2018 Chevy Equinox?

The recommended spark plug gap for a 2018 Chevy Equinox is typically between 0.040 and 0.060 inches. However, it’s crucial to consult your owner’s manual for the precise gap specification for your specific engine configuration.

How often should I change the spark plugs in my 2018 Chevy Equinox?

The general recommendation for spark plug replacement in a 2018 Chevy Equinox is every 30,000 to 60,000 miles. However, factors like driving conditions, fuel quality, and engine type can influence the required interval. Refer to your owner’s manual for the manufacturer’s recommended service schedule. (See Also: How to Test Spark Plug for Spark? Easy Steps)

Can I use any type of spark plug in my 2018 Chevy Equinox?

It’s essential to use spark plugs that are specifically designed for your 2018 Chevy Equinox. Using the wrong type of spark plug can lead to performance issues, engine damage, or even void your warranty. Consult your owner’s manual or a reputable auto parts store for the correct spark plug type and specifications.

What are the signs that my spark plugs need to be replaced?

Common signs that your spark plugs need replacement include: reduced engine performance, rough idling, difficulty starting, decreased fuel economy, and increased engine noise. If you experience any of these symptoms, it’s advisable to have your spark plugs inspected by a qualified mechanic.

See Also:

What should I do if I strip a spark plug thread?

Stripped spark plug threads can be a frustrating issue. If this happens, it’s best to seek professional help. A mechanic can use specialized tools and techniques to repair the damaged threads and ensure a proper spark plug installation.