Sometimes you hear a knocking sound coming from your engine while going on the road. Some people neglect such noise and do not get the car checked. But it is not the right thing to do. You Should not ignore such engine knocking sound; instead, you should get your vehicle checked to avoid any bad situation. Below I have given some of the common reasons for knocking and their solutions.
#1 Low Octane Rating
Low Octane Fuel is the most common cause of the engine knocking. The fuels available at gas stations have different octane ratings that indicate the efficiency of the fuel in the engine. Your engine may produce a knocking sound because of low octane rating fuel. Getting high octane rating fuel of 91 or above for a high-performance vehicle can solve the problem. Because the low octane rating fuel pre ignites the air-fuel mixture creating a knocking sound.
#2 Carbon Deposits
The fuel you add to the vehicle should have a carbon cleaning additive so that no carbon deposits on spark plugs and other parts of the engine in the combustion process. If there is no such carbon cleaning additive present, then carbon can easily deposit on engine parts, causing the engine knocking sound.
#3 Lubrication Problem of Cylinders
Engine knocking sound can be produced when the cylinder head is not lubricated enough. Check for an oil leak in it. You may also need to replace the oil if it is too old. It can also be due to loose valves or lifters not getting the proper amount of oil they need for lubrication.
#4 Spark Plugs Incompatibility
Wrong spark plugs can also cause knocking sounds in the engine. The spark difference in the level of resistance to water temperatures from the engine So having a wrong partner that cannot tolerate your engine heat will not work correctly. Getting your car checked from a mechanic and getting the right spark plug is its simplest solution.
#5 Imbalanced Air-to-Fuel Mixture
The engine’s fuel will unevenly burn if it does not receive the proper air and fuel mixture and will cause the knocking sound. It can also damage the cylinder wall and piston. Get your car checked by a mechanic and replace the faulty components before further damage is caused.
#6 Timing Belt Wearing
The engine timing is controlled by a timing belt, which is made up of rubber. With time like any other component, this rubber belt stretch, wear out and break and hence not work correctly, causing knocking. There is a time for which the manufacturer allows you to use the belt. It’s best to change the belt after that specific period to avoid serious problems.
#7 Engine Crank Problem
A damaged or broken crank can also cause engine knocking. The broken crankshaft will not allow the piston to fire at the proper time and create a series of other issues. Replacing the crank is its only solution, which should only be carried out by a professional as it’s an intensive care task.
#8 Engine Bearings
The engine bearings can get dislodged or misplaced due to extreme vibrations or other faults in the engine. This fault in the bearings can also cause an engine knocking sound. To solve the problem, we need to replace or reset the engine bearings that are quite a hard task. It involves digging deep in the engine and then replacing or resetting the bearings. It requires great skill and a lot of time to complete, and only highly professionals can do so. Don’t try to do it yourself.