How to Change Spark Plugs Hyundai i20: A Step-by-Step Guide

Are you looking to save money on car maintenance and feel empowered by tackling your own repairs? Changing spark plugs on your Hyundai i20 is a relatively simple DIY project that can be done with a few basic tools and a little patience. This guide will walk you through the process step-by-step, ensuring you can confidently replace your spark plugs and get your car running smoothly again.

Why Change Spark Plugs?

Spark plugs are essential components in your car’s engine, responsible for igniting the air-fuel mixture that powers your vehicle. Over time, spark plugs wear down and can cause various problems, including:

• Reduced engine performance: Worn spark plugs can lead to misfires, causing your engine to run sluggishly and lose power.
• Increased fuel consumption: Inefficient combustion due to faulty spark plugs can result in higher fuel consumption.
• Rough idle: A rough idle is often a sign of misfiring cylinders, indicating worn spark plugs.
• Hard starting: Worn spark plugs can make it difficult to start your engine, especially in cold weather.
• Engine damage: If left unchecked, worn spark plugs can cause serious damage to your engine.

Tools You’ll Need

Before you start, gather the following tools:

• Socket wrench set: You’ll need a socket wrench that fits the size of your spark plugs (usually 16mm).
• Torque wrench: This is crucial to ensure the spark plugs are tightened to the correct specification.
• Spark plug gap tool: Used to adjust the gap between the spark plug electrodes.
• Ratchet: A standard ratchet will help you turn the socket wrench.
• Extension: An extension bar will make it easier to reach the spark plugs.
• Gloves: Protect your hands from dirt and grease.
• Safety glasses: Protect your eyes from flying debris.
• New spark plugs: Make sure to purchase the correct type and model for your Hyundai i20. Consult your owner’s manual or a trusted parts store for the correct specifications.

Safety Precautions

• Disconnect the battery: Always disconnect the negative terminal of your car battery before working on any electrical components, including spark plugs. This prevents accidental electrical shock.
• Work in a well-ventilated area: Avoid working in enclosed spaces or areas with poor ventilation, as exhaust fumes can be harmful.
• Use caution with hot parts: The engine can be hot, even after it has been turned off. Take care not to touch any hot surfaces.
• Keep tools organized: Maintain a clean and organized workspace to avoid losing tools or dropping them into the engine.

Step-by-Step Guide to Changing Spark Plugs

Now that you have your tools and have taken necessary precautions, follow these steps:

1. Locate the Spark Plugs:

• Open the hood of your Hyundai i20.
• Locate the engine compartment. The spark plugs are typically located on the top of the engine, near the center.
• Refer to your owner’s manual for the exact location of the spark plugs on your specific model.

2. Disconnect the Battery:

• Locate the battery in the engine compartment.
• Disconnect the negative terminal by loosening the clamp and removing it.

3. Remove the Spark Plug Wires:

• If your Hyundai i20 has spark plug wires, carefully disconnect them from the spark plugs.
• Pull the wires straight up, avoiding any sudden movements that could damage the wires.

4. Remove the Spark Plugs:

• Use the socket wrench to loosen the spark plugs.
• Turn the socket wrench counterclockwise to loosen the spark plugs.
• Once the spark plugs are loose, remove them by hand.

5. Inspect the Old Spark Plugs:

• Examine the old spark plugs for signs of wear and tear.
• Look for excessive wear on the electrodes, carbon buildup, or any damage to the ceramic insulator.

6. Install the New Spark Plugs:

• Before installing the new spark plugs, check the gap between the electrodes using the spark plug gap tool.
• Ensure the gap matches the specifications provided in your owner’s manual.
• Thread the new spark plugs into the cylinder head by hand, ensuring they are seated correctly.
• Use the socket wrench to tighten the spark plugs to the specified torque. Refer to your owner’s manual for the correct torque specification.

7. Reconnect the Spark Plug Wires:

• If your Hyundai i20 has spark plug wires, reconnect them to the new spark plugs.
• Ensure the wires are properly seated and secured.

8. Reconnect the Battery:

• Connect the negative terminal of the battery back to the battery post.

9. Start the Engine:

• Turn the ignition key to start the engine.
• Listen for any unusual noises or rough running.
• If the engine runs smoothly, you have successfully replaced the spark plugs.

Final Touches: Ensuring Proper Operation

After replacing the spark plugs, it’s important to check for any leaks and ensure the engine is running smoothly.

• Check for leaks: Inspect the spark plug wells for any signs of leaks. If there are leaks, tighten the spark plugs further or replace the spark plug seals.
• Test drive: Take your Hyundai i20 for a test drive to ensure the engine is running smoothly and there are no issues with acceleration or idle.

Time to Enjoy the Ride!

Congratulations! You’ve successfully replaced the spark plugs in your Hyundai i20. By taking the time to perform this simple maintenance task, you’ve saved money and gained valuable knowledge about your car. Remember to keep track of your spark plug replacement intervals and follow the recommended maintenance schedule for optimal engine performance and longevity.

What You Need to Know

1. How often should I change my spark plugs?

The recommended spark plug replacement interval varies depending on the type of spark plugs and your driving habits. However, most manufacturers recommend replacing spark plugs every 30,000 to 100,000 miles. Consult your owner’s manual for the specific interval for your Hyundai i20.

2. Can I use different spark plugs than the ones recommended for my Hyundai i20?

It’s not recommended to use different spark plugs than those specified for your Hyundai i20. Using the wrong spark plugs can lead to engine problems and void your warranty.

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

Signs that your spark plugs need to be replaced include:

• Reduced engine performance
• Increased fuel consumption
• Rough idle
• Hard starting
• Engine misfires

4. Can I replace my spark plugs myself, or should I take it to a mechanic?

Replacing spark plugs is a relatively simple DIY task. However, if you’re not comfortable working on your car or lack the necessary tools, it’s best to take it to a qualified mechanic.

5. How much does it cost to have a mechanic replace my spark plugs?

The cost of having a mechanic replace your spark plugs varies depending on the mechanic’s labor rates and the cost of the spark plugs. However, you can expect to pay anywhere from $50 to $200 for the entire service.