2010 Acura TSX Spark Plug Replacement

The 2010 Acura TSX is a popular luxury sedan known for its reliability and performance. One crucial maintenance task for this vehicle is replacing the spark plugs. Spark plugs play a vital role in the engine's combustion process, igniting the air-fuel mixture to power the vehicle. Over time, spark plugs wear out and require replacement to maintain optimal engine performance and fuel efficiency. In this comprehensive guide, we'll walk you through the process of replacing spark plugs in your 2010 Acura TSX, providing you with the necessary information and steps to complete this task successfully.

Before diving into the replacement process, it's essential to understand the specifications of the spark plugs used in the 2010 Acura TSX. The vehicle comes equipped with iridium spark plugs, which are known for their durability and long lifespan. These spark plugs are designed to last up to 100,000 miles, but it's recommended to replace them around the 60,000 to 70,000-mile mark for optimal performance.

Tools and Materials Needed

Before starting the spark plug replacement process, gather all the necessary tools and materials. Having everything on hand will make the job smoother and more efficient. Here's a list of items you'll need:

• New spark plugs (NGK or Denso iridium plugs recommended)
• Spark plug socket (5/8-inch)
• Ratchet and extension
• Torque wrench
• Gap tool (if adjusting spark plug gap)
• Anti-seize compound
• Dielectric grease
• Socket set (10mm for coil pack bolts)
• Flathead screwdriver
• Work gloves
• Safety glasses

It's crucial to use the correct spark plugs for your 2010 Acura TSX. The recommended spark plugs are either NGK (part number IZFR6K11) or Denso (part number SKJ20DR-M11). These iridium spark plugs are designed specifically for your vehicle and will ensure optimal performance and longevity.

When purchasing new spark plugs, consider buying them from a reputable auto parts store or directly from an Acura dealership. This will ensure you get genuine parts that meet the manufacturer's specifications. It's also a good idea to buy a set of four spark plugs, even if you're only replacing one, as it's generally recommended to replace all spark plugs at the same time for consistent performance.

Preparing for Spark Plug Replacement

Before you begin the replacement process, it's essential to prepare your vehicle and workspace. Follow these steps to ensure a safe and efficient spark plug replacement:

1. Park your vehicle on a level surface and engage the parking brake.

2. Allow the engine to cool completely if you've recently driven the car. Working on a hot engine can lead to burns and other injuries.

3. Open the hood and secure it in place.

4. Disconnect the negative terminal of the battery to prevent any electrical accidents while working on the ignition system.

5. Remove any engine covers or components that may obstruct access to the spark plugs. In the 2010 Acura TSX, you'll need to remove the engine cover and possibly the strut tower brace for easier access.

6. Locate the four ignition coils on top of the engine. These are connected directly to the spark plugs.

Taking these preparatory steps will make the spark plug replacement process safer and more straightforward. It's also a good idea to clean the area around the ignition coils and spark plug wells to prevent any debris from falling into the engine when you remove the old spark plugs.

Removing the Old Spark Plugs

Now that you've prepared your workspace and gathered the necessary tools, it's time to remove the old spark plugs. Follow these steps carefully to avoid damaging any components:

1. Start with the first ignition coil. Use a 10mm socket to remove the bolt holding the coil in place.

2. Gently pull the ignition coil straight up to remove it from the spark plug well. If it's stuck, wiggle it slightly while pulling upward.

3. Once the coil is removed, you'll see the spark plug beneath it.

4. Use your 5/8-inch spark plug socket attached to the ratchet and extension to loosen the spark plug. Turn it counterclockwise to unscrew it.

5. Carefully remove the spark plug from the well. Inspect it for any signs of damage, excessive wear, or oil fouling.

6. Repeat this process for the remaining three spark plugs, working on one at a time to avoid confusion.

As you remove each spark plug, take note of its condition. The appearance of the old spark plugs can provide valuable information about your engine's health. Normal wear will show a light tan or gray color on the electrode. If you notice any unusual colors, excessive buildup, or damage, it may indicate other engine issues that need attention.

Installing the New Spark Plugs

With the old spark plugs removed, it's time to install the new ones. Follow these steps to ensure proper installation:

1. Check the gap of the new spark plugs using a gap tool. The correct gap for the 2010 Acura TSX is 0.044 inches (1.1 mm). Adjust if necessary, but be gentle as iridium tips are delicate.

2. Apply a small amount of anti-seize compound to the threads of each new spark plug. This will prevent them from seizing in the engine block and make future removal easier.

3. Carefully insert the new spark plug into the spark plug socket, ensuring it's secure.

4. Lower the spark plug into the well and thread it in by hand to avoid cross-threading.

5. Once hand-tight, use the torque wrench to tighten the spark plug to the manufacturer's specifications, typically around 13 ft-lbs (156 in-lbs) for the 2010 Acura TSX.

6. Apply a small amount of dielectric grease to the inside of the ignition coil boot. This helps prevent moisture intrusion and ensures a good connection.

7. Reinstall the ignition coil, making sure it's fully seated on the spark plug.

8. Secure the ignition coil with the 10mm bolt, being careful not to overtighten.

9. Repeat this process for the remaining three spark plugs.

It's crucial to avoid overtightening the spark plugs, as this can damage the threads in the cylinder head or break the spark plug itself. Always use a torque wrench to ensure the correct tightening specification is met.

Finishing Up and Testing

After installing all four new spark plugs and replacing the ignition coils, it's time to finish up the job and test your work:

1. Double-check that all four ignition coils are properly seated and secured.

2. Reinstall any engine covers or components you removed earlier.

3. Reconnect the negative terminal of the battery.

4. Start the engine and listen for any unusual noises or misfires.

5. Take the car for a short test drive to ensure smooth operation and improved performance.

If you notice any issues during the test drive, such as rough idling, misfires, or check engine light illumination, turn off the engine and recheck your work. It's possible that a spark plug or ignition coil may not be fully seated or connected properly.

Replacing the spark plugs in your 2010 Acura TSX can significantly improve its performance, fuel efficiency, and overall reliability. By following this guide and using the correct tools and parts, you can successfully complete this maintenance task and keep your TSX running smoothly for years to come.

FAQs About 2010 Acura TSX Spark Plug Replacement

• How often should I replace spark plugs in my 2010 Acura TSX?
  It's recommended to replace spark plugs every 60,000 to 70,000 miles, although they can last up to 100,000 miles.
• Can I replace just one spark plug if it's faulty?
  While possible, it's best to replace all four spark plugs at the same time for consistent performance and efficiency.
• What happens if I don't replace worn spark plugs?
  Worn spark plugs can lead to reduced fuel efficiency, poor engine performance, and potential misfires.
• Do I need to adjust the gap on new spark plugs?
  Pre-gapped spark plugs are available, but it's always good to check and adjust if necessary to the specified 0.044 inches (1.1 mm).
• Can I use copper spark plugs instead of iridium in my TSX?
  It's not recommended, as iridium plugs are designed for optimal performance and longevity in the 2010 Acura TSX.