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What is the recommended spark plug gap NGK?

The recommended spark plug gap for NGK spark plugs varies depending on the specific model and application. In general, the typical spark plug gap for NGK spark plugs ranges from 0.024 to 0.035 inches (0.6 to 0.9 millimeters).


Determining the Correct Spark Plug Gap


To find the correct spark plug gap for your NGK spark plugs, you should consult the manufacturer's recommendations or your vehicle's service manual. The optimal spark plug gap can vary based on factors such as the engine type, fuel system, and other engine specifications.


Measuring and adjusting the spark plug gap is an important step in ensuring proper engine performance and fuel efficiency. If the gap is too wide, it can cause misfiring and poor engine performance. If the gap is too narrow, it can lead to increased emissions and reduced fuel economy.


Steps to Measure and Adjust the Spark Plug Gap



  • Locate the spark plugs in your engine and remove them using a spark plug socket and ratchet.

  • Use a spark plug gap tool or feeler gauge to measure the gap between the center electrode and the ground electrode on the spark plug.

  • If the gap is not within the recommended range, carefully bend the ground electrode to adjust the gap to the proper specification.

  • Reinstall the spark plugs and tighten them to the manufacturer's recommended torque specification.


It's important to follow the manufacturer's instructions and use the correct tools to avoid damaging the spark plugs or the engine components. Proper spark plug gap maintenance can help ensure your engine runs smoothly and efficiently.

Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.