Is your engine top noisy? This could signal a variety of issues, however no matter what the issue is, prompt attention is required. Take time to read possible causes of your engine top noise
o CLICKING ENGINE NOISE: this kind of noise is seen to increase with the revving of the engine. The cause of this could range from reduced oil pressure to excessive valve lash. First to check is your engine oil level to confirm it isn’t low (use your engine dipstick to do this), then check if your oil warning indicator on your dashboard screen is not triggered on. If you notice a reduced oil pressure it could be that your oil pump is failed, clogged. A failed oil pump prevents the right oil pressure from getting to the valve train. Another thing to be checked is the oil viscosity. If the oil is very viscous or reduced in viscosity, a noisy engine could arise.
o VALVE ENGINE NOISE: after you have checked and seen that the noise is oil related, it is thus possible that the valves are the culprits. Periodic adjustments of mechanical lifter valve lash is required. When there a gap between the top of the rocker arms and valve stem noise arises. Please your mechanic adjust this possibly with feeler gauge. Also consult your owner’s manual on how to go about this.
o BEARING NOISE: This is common among long mileage cars same with cars that have not been maintained through regular change of oil and the oil filter. Bearing noise are usually dull hammering noise and should be given prompt mechanical attention. Have the bearing checked by dropping the the bottom oil pan. If the bearings are badly worn, a complete overhaul of the engine might be required.
SEE ALSO:WHY IS YOUR CHECK ENGINE LIGHT ON