Honda 14711-P8E-A00 Valve, In.

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The valve clearance generally needs to be changed if any valve train components have been changed, if a valve has been resurfaced or if there is a valve noise. To confirm that the valve gear is correctly adjusted, look at engine while the car is running with the bonnet open; if the valve train is clattering an adjustment is required. The engine should also be off when inspecting and setting the valve clearance; it is even better if the engine is cold. Start with the valve covers draining and then turn the crankshaft until the number one piston is at TDC while the pointer at the front timing bell cover is on the sprocket mark. In this position the valves for the cylinder number one which contains for valves are adjusted. First of the intake valve, introduce a feeler gauge of the right thickness between the stem of the valve and the rocker arm. When there is no drag at all or more than a slight drag, simply loose the adjuster nut and screw in the adjuster screw until the contact of the feeler gauge is felt slightly tight. Using a screwdriver, tighten the locknut after which a check on the clearance should be made to reveal that no change has occurred. The same procedure is done to the other intake valve and the two exhaust valves. After that turn the crankshaft pulley clockwise until the number four on the camshaft sprocket is on the same line with the pointer of the timing belt cover and then check and align the number four cylinder valves. Proceed to rotate the crankshaft pulley 120 degrees clockwise so that the number two cylinder is at TDC and then adjust the valves of that cylinder and then the other cylinders in accordance to the firing order.

The valve clearance generally does not need adjustment unless valve train components have been replaced or a valve job has been performed, or if the valves are noisy. The simplest check for proper valve adjustment is to listen carefully to the engine running with the hood open. If the valve train is noisy, adjustment is necessary. The valve clearance must be checked and adjusted with the engine cold. Remove the valve covers. Rotate the crankshaft clockwise and position the number one piston at TDC. When positioned correctly at TDC, the pointer on the front timing belt cover will align with the sprocket mark. In this position, adjust the valves for cylinder number one. There are four valves for each cylinder. Starting with the intake valve, insert a feeler gauge of the correct thickness between the valve stem and the rocker arm. Withdraw it; you should feel a slight drag. If there's no drag or a heavy drag, loosen the adjuster nut and back off the adjuster screw. Carefully tighten the adjuster screw until you can feel a slight drag on the feeler gauge as you withdraw it. Hold the adjuster screw with a screwdriver to keep it from turning and tighten the locknut. Recheck the clearance to make sure it hasn't changed. Repeat the procedure on the other intake valve, then on the two exhaust valves. Rotate the crankshaft pulley clockwise until the number 4 on the camshaft sprocket is aligned with the pointer on the timing belt cover. Check and adjust the number 4 cylinder valves. Rotate the crankshaft pulley 120 degrees clockwise until the number 2 cylinder is at TDC. Check and adjust the number 2 cylinder valves. Rotate the crankshaft pulley clockwise, following the firing order, and adjust the remaining valves. Install the valve covers.

In the TDC position for cylinder number 1, which has four valves, start with the intake valve. Insert a feeler gauge of the correct thickness between the valve stem and the rocker arm. Withdraw it to feel a slight drag; if there's no drag or a heavy drag, loosen the adjuster nut and back off the adjuster screw. Carefully tighten the adjuster screw until a slight drag is felt on the feeler gauge upon withdrawal. Hold the adjuster screw with a screwdriver to prevent it from turning, then tighten the locknut and recheck the clearance to ensure it hasn't changed. Repeat this process for the other intake valve and the two exhaust valves.

If there's no drag or a heavy drag, you should loosen the adjuster nut and back off the adjuster screw.