1. Low Engine Oil: Check the engine oil level and ensure it is at the recommended level marked on the oil dipstick. If the oil level is low, add the recommended type and quantity of oil as specified in your car's owner's manual.
2. Oil Viscosity: Using an oil with the wrong viscosity can also cause knocking noises. Refer to your owner's manual to confirm the correct oil viscosity for your Accord. If you're unsure or haven't recently changed the oil, consider opting for the manufacturer's recommended viscosity.
3. Worn Engine Mounts: Engine mounts are designed to dampen engine vibrations. Worn or damaged mounts can cause the engine to vibrate excessively, potentially resulting in knocking sounds.
4. Timing Belt Issues: The timing belt, responsible for synchronizing the camshaft and crankshaft rotation, may have become loose or worn out. If the timing belt is not functioning correctly, it can produce a knocking noise due to improper valve timing.
5. Engine Component Issues: Knocking noises may also indicate potential problems with internal engine components like piston rings, connecting rod bearings, or crankshaft bearings. These issues are more likely to occur in high-mileage engines, but sudden problems or improper maintenance can still cause them in cars with relatively low mileage.
Since knocking noises can be a symptom of different underlying issues, it's advisable to seek a professional diagnosis. To ensure your vehicle operates smoothly and reliably, consult with a trusted mechanic or visit your local Honda dealership to identify the precise cause of the knocking noise and have it promptly fixed.
