The correct spark plug gap for a 2017 Hyundai Elantra with a 2.0L engine is 1.1 mm or 0.044 inches. This specification is crucial for optimal engine performance and fuel efficiency. Let's delve deeper into the importance of the correct spark plug gap and how to maintain it for your Elantra.

Spark Plug Gap Importance

The spark plug gap plays a vital role in your Elantra's engine performance. It affects:

  • Ignition efficiency
  • Fuel economy
  • Engine power output
  • Emissions control

A properly gapped spark plug ensures a strong spark, leading to complete fuel combustion and smooth engine operation.

Consequences of Incorrect Gap

If the gap is too small:

  • Weak spark
  • Incomplete combustion
  • Poor fuel economy

If the gap is too large:

  • Misfires
  • Rough idling
  • Potential damage to ignition system

Checking and Adjusting the Gap

To check your Elantra's spark plug gap:

1. Remove the spark plug carefully

2. Use a spark plug gap tool to measure the existing gap

3. Adjust if necessary by gently bending the ground electrode

Caution: Be extremely careful when adjusting iridium or platinum tipped plugs, as they are delicate and easily damaged.

Recommended Tools

  • Feeler gauge or specialized gap tool
  • Socket wrench with spark plug socket
  • Torque wrench for proper installation

Spark Plug Replacement

For the 2017 Hyundai Elantra 2.0L engine, consider these spark plug options:

BrandPart NumberPre-gapped
NGKSILZKR8C8SYes (0.044")
DensoSC20HR11Yes (0.044")

Always consult your Elantra's manual or a professional mechanic before making any changes to your vehicle's ignition system.

Maintenance Tips

  • Replace spark plugs every 97,500 miles as per Hyundai's recommendation
  • Always use high-quality, manufacturer-recommended spark plugs
  • Check the gap on new plugs, even if they're pre-gapped
  • Ensure proper torque when installing new plugs to prevent damage

Remember, proper spark plug maintenance can significantly improve your Elantra's performance and longevity.

FAQs About 2017 Hyundai Elantra 2.0 Spark Plug Gap

    • Can I use a different spark plug gap than recommended?
      It's not advisable. Using the correct gap ensures optimal engine performance and prevents potential damage.
    • How often should I check my spark plug gap?
      Check the gap whenever you replace your spark plugs, typically every 97,500 miles for your Elantra.
    • Will the wrong gap affect my fuel economy?
      Yes, an incorrect gap can lead to incomplete combustion and reduced fuel efficiency.