Adjusting the valves on your Honda Accord can, in many cases, restore idle quality and performance that has been lost due to engine wear. The key to performing this procedure successfully is to avoid rushing through it. Take it one step at a time, and adjust each valve in exactly the same way. This project is possible for the experienced home mechanic and does not require special tools or equipment.
Remove the 10mm bolts that attach the valve cover to the cylinder head and the timing cover. Remove the valve cover and valve cover gasket from the cylinder head, and remove the upper timing cover from the engine. Remove the spark plugs.
Rotate the engine to top dead center on the number one cylinder compression stroke. Place a finger into the spark plug opening in the cylinder head and feel the compression as the engine nears top dead center to verify it is on the compression stroke.