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How To Gap Spark Plugs

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Are you changing your spark plugs for the first time, but aren’t sure of the proper Chevy 350 spark plug gap to keep your Chevy running properly? You’ve come to the right place. In fact, our comprehensive guide by Advantage Chevrolet will take you through the step-by-step process of how to gap spark plugs properly to optimize your engine’s performance. These steps work on any spark plug, for the novice or experienced DIY automotive enthusiast. If after reading this guide, you’re still unsure, you’re always welcome to schedule a service appointment with us at Advantage Chevrolet near Staten Island.



Why Do I Need to Gap Spark Plugs?

  • Properly gapped spark plugs ensure efficient combustion, maximizing power and fuel efficiency.
  • Improper spark plug gapping can lead to a loss of power and fuel economy, as well as hesitation and a rough engine.
  • Customizing the gap allows you to tailor the spark plug to your specific engine needs. This is especially important with certain engine modifications.
  • Gapping is essential for achieving the optimal spark, resulting in better ignition and overall performance.

Step-by-Step Guide: How to Gap Jeep Spark Plugs

  1. Gather the Tools: A feeler gauge and a spark plug gap tool are essential.
  2. Identify the Correct Gap: Reference your vehicle’s owner manual or the spark plug manufacturer’s specifications to determine the ideal Chevy 350 spark plug gap.
  3. Inspect the Spark Plugs: Check for any signs of damage or excessive wear. It’s always beneficial to replace them as a set. Pre-gapped spark plugs are also available if you don’t have the proper spark plug gap tool and feeler gauge.
  4. Adjust the Gap: Gently pry open or close the gap with the spark plug gap tool. Be careful not to apply too much pressure, which may damage the plug.
  5. Measure the Gap: Insert the feeler gauge into the gap and adjust it until you feel a slight resistance. Note the measurement.
  6. Recheck and Fine-tune: Repeat the process until the spark plug gap measurement meets the engine’s requirements. Make minor adjustments as necessary until you achieve the desired gap size.
  7. Install the Spark Plugs: Carefully insert the properly gapped spark plugs into each cylinder and tighten them using a socket wrench.
  8. Test and Verify: Start your engine and observe its performance. If you notice any issues, such as a rough idle, recheck the gaps and adjust if needed.

See Experts at Advantage Chevrolet Today 

Don’t live with a rough idle, low power, or poor fuel economy with your Chevy. Use our step-by-step guide on how to gap spark plugs to optimize your engine’s overall performance. At Advantage Chevrolet in Brooklyn, we offer genuine OEM Chevrolet parts, including pre-gapped spark plugs. We are conveniently located close to Bronx and Queens. Contact us with any questions about our service and parts tips


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