Has your car been producing some weird and annoying sounds of late? Maybe a squeal, rumble, roar and not to mention a clunk. That could be an engine knock. If you don’t deal with the problem faster, it will cause engine damage.
You need to understand how it occurs before even finding the solution. If an engine is functioning correctly, the fuel and air will be balanced correctly in its cylinder. Instead of the fuel-burning at once, it will burn in some small regulated pockets. A little shock results after each pocket burns. The shock ignites the other pocket, and so on. If your car is knocking, the fuel will burn unevenly. The shock goes off in an untimely manner resulting in an annoying voice. It’s risky since it can damage your engine cylinder walls as well as the piston.
Apart from knowing the best engine treatment for knocking, you should also know what causes the engine to knock.
Faulty Spark Plugs
Your engine has spark plugs that deliver electric sparks which ignite and bring about fuel/air mixture in the engine cylinder. Unfortunately, the spark plug may breakdown. That’s why the manufacturer recommends that you should replace it after every 30,000 miles. Some may still be good even after 30000 miles depending on the type. Always ensure that the spark plug on your car is the recommended one for your car’s model.
When buying gasoline always check its octane rating. If fuel has a high octane rating, it means that it can withstand more compression before it ignites. Your engine will produce more noise when you use regular fuel while it is supposed to use high octane fuel. To be on the safe side, always check the recommendations of the manufacturer. The more you continue to use the wrong fuel, the higher the chances of engine knock; hence engine damage is increasing.
Some fuel contains some carbon deposits that end up clogging in the cylinder of your engine. That’s why countries like the USA require that every fuel that is sold should include carbon cleaning detergent. Unfortunately, carbon deposits still find their way to the cylinder and clog. It reduces the space for air and fuel, resulting in increased compression. That causes nasty knocking sounds. Since these carbon deposits can damage the cylinder, you must take the right precautions. After operating with your engine for 100 hours, check if there is carbon build-up. Professionals can also check it if you lack time to inspect. After some time, keep on hiring professionals to clean your engine cylinder.
So, do you know how to get rid of engine knock? Here are the steps to follow.
Check Engine Temperature
Once the temperature reaches certain levels, the sending unit turns on the electric fan. You should check if the fan is working when it is supposed to. In case you realize that there is an overheating indicator, you should replace the radiator cap with the one that has an inbuilt temperature gauge. If your car has a fan shroud, ensure it is appropriately secured. Check if the thermostat is opening at the right time, mostly around 195 degrees. A functional water pump ensures that your engine is operating at the right temperature. Check if its belt if still there. You can coat it with a 303 UV protectant.
Increase The Level Of Octane In The Fuel
Ensure that the oil you are using is the recommended one by the manufacturer. If you are not using the exact oil, ensure that the oil reaches a minimum required octane level. Confirm from the manual if the car is okay with the minimum octane levels. Some demands for a higher octane level. If all through you have been fueling your vehicle with the wrong fuel, add an octane booster. Buy the right gas. Using the correct octane levels is an excellent way on how to quiet a noisy engine.
Clean your Combustion Chamber
Wrong fuel causes knocking and also leaves contaminants in the cylinder. Before putting the right oil, clean the cylinder. Use a fuel additive to help keep the combustion chamber clean. Adding detergent to the oil is another way of cleaning the cylinder. If even after using detergent your engine is still not running right, flush your engine. Test the car by starting the engine. Listen carefully if the engine is running smoothly.
Replace The Spark Plugs
One way to reduce engine knocking is to use the right sparks plugs. Check the manual to know what spark plug is suitable for your car. Find the right tools and turn off the engine. Check if the spark plugs you are changing have a problem. If on the electrode side it has brownish-grey residue, then it is okay. Instead of replacing it, use a wire brush to clean and return it. There is no need to replace it. If it Is damaged, remove and replace it. Find help if you have no idea how to replace it. Hook battery terminals back up correctly.
Check the Car’s Timing
Find a timing mark (often covered with a cap that is either plastic or rubber) on your engine. Look for spark plug number one. Set your park brake then turn on the engine. Take number one spark-plug wire and connect it with the timing light. Aim the timing light at your timing mark. Check the timing test and interpret the results.
Also read: How to Fix A Fuel Pump Without Replacing It?
Nobody likes the annoying voices that the car engine produces after knocking. You can’t ignore it because it may result in engine damage. The cost of replacing an engine is very high as compared to the safety measures you can take to avoid the damage. For instance, use the fuel with the right level of the octane as the manufacturer recommends. Avoid using a low-quality spark plug that is not in the manual. Use the right gas and whenever you refill the oil ensure it’s the right one with minimal carbon deposits if any. Once in a while, engage the experts to clean the cylinder to stop the building up carbon deposits and other pollutants.