Owners of 2013-14 Accord models equipped with 2.4-liter engines may complain of a slapping or clicking noise from the front of the engine while idling. One likely cause of the noise, reports Honda, is dirt or other debris restricting the oil flow to the automatic timing chain tensioner. Replacing the tensioner and affixing a new screened filter (part #14560-5A2-A00) to the back of it should help eliminate the noise and prevent further issues.
Start the fix by removing the timing chain case cover on the lower left side of the engine. Clean both the case and case cover of old sealant. Next, turn the crankshaft counterclockwise until the old chain tensioner is fully compressed. Using a large paper clip or small Allen wrench, hold the tensioner's arm in the locked position, then remove the tensioner from the engine. Continue the repair by removing the oil filter. Using compressed air, blow air into the oil passage in the block for at least five seconds to clear any remaining debris from the engine, then install a new oil filter.
Using the illustration as reference, affix the screened filter to the back of the new timing chain tensioner as shown, then install the tensioner on to the engine using two bolts. To complete the fix, apply a suitable sealant to the case cover, install the cover and tighten the cover bolts, top off the oil level and start the engine and check for leaks.