The spark plug gap for most 2010 Honda Accord engines is typically 0.043–0.046 inches (1.1–1.2 mm).
Engine variants and recommended gap
Honda offered two engines in the 2010 Accord: the 2.4-liter four-cylinder and the 3.5-liter V6. For both engines, the typical OEM gap guidance is in roughly the same range, though you should verify with the plug packaging or manual for your exact plug type.
- 2.4 L I4 (K-series) — gap: 0.043–0.046 in (1.1–1.2 mm)
- 3.5 L V6 (J-series) — gap: 0.043–0.046 in (1.1–1.2 mm)
Note: Regardless of engine, use the gap specified by the spark plug manufacturer or the Honda service manual for your exact plug type and ensure proper installation torque.
Check and set the gap
If you are performing spark plug maintenance yourself, follow these steps to check and adjust the gap where applicable.
- Identify the correct plug type for your engine and obtain new plugs if the current ones are out of spec.
- Measure the gap with a precise feeler gauge set to 0.043–0.046 inches (1.1–1.2 mm).
- If the plug is within tolerance, proceed with installation; if it's out of tolerance, do not force the gap—adjust gently if the plug's design allows, or replace the plug with a new one of the same type.
- Install the plug to the manufacturer-specified torque and verify the gap remains correct after tightening, if the plug is designed to maintain the gap.
Note: Some spark plugs are pre-gapped and not adjustable; always verify with the plug manufacturer guidance. After installation, perform a basic engine start to ensure there is no misfire.
Summary
For a 2010 Honda Accord, the typical spark plug gap is about 0.043–0.046 inches (1.1–1.2 mm) for both 2.4L I4 and 3.5L V6 engines. Always confirm the exact gap with the spark plug you are using and follow Honda’s service guidelines for torque and installation.