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An engine performs well when it makes full compression without any risk of leakage. The combustion gas, engine oil, and coolant must be separated into sections. Only a head gasket contains them, blocking every risk of leakage. However, your head gasket may wear out or break down for many reasons. What are those reasons, and how can you deal with them? You will find out everything in this blog. What Is a Head Gasket? Every mechanical part that deals with liquid or gas needs some sealing support. Likewise, an engine head requires a gasket to function well. A head gasket seals the engine head to prevent oil and coolant leakage inside the combustion chamber. The primary benefit is maintaining smooth combustion by blocking any liquid from the engine block. The head gasket also protects a cylinder head from coolant and oil.   The head gasket also maintains compression by blocking the gas inside the combustion chamber. It keeps the pressure inside the combustion chamber by locking the gas and liquids inside their respective compartments. It seals the engine block and cylinder head to help the engine offer the best performance. For this reason, this heavy-duty sealant is made of either multi-layered steel, PTFE, cork, silicon rubber, or any other durable material. Causes of a Blown Head Gasket Everything comes to an end when it encounters excessive resistance. Likewise, a head gasket has some limitations. It can blow out once it encounters the challenges mentioned below. Overheating When an engine gets overheated continuously, some components get severe damage. Likewise, head gasket faces wear and tear when too much overheating occurs. These frequent impacts of heat break down the gasket slowly.  Engine Detonation or Knock Too high RPMs can cause long-term damage to a vehicle. When a person keeps the RPMs high so often, the engine faces detonation. Such detonation burns down the head gasket. Even if you have installed a metallic type, it can break down after some time. The carbon layer starts building on it because of that, and it contaminates the gasket and other components. Poor Maintenance  Lack of maintenance can lead to multiple problems in a vehicle. There will be problems with the head gasket when it comes to the engine. It is connected to overheating, where coolants and lubricants fail to do their job. It happens when you do not replace the contaminated ones. The cooling system fails to reduce temperature levels since it needs full support from good-quality oil and coolant. As a result, the head gasket faces the heat and friction. Age and Wear  Every head gasket has a life that must be replaced when it reaches that life. Failure to inspect frequently or notice significant signs of damaged gaskets can lead to problems. Prolonged wear and tear on the gasket makes it mandatory to replace it. Improper Installation If a mechanic does not install a head gasket properly, it will have premature problems. Not installing the right part can lead to imbalanced wear and tear. Likewise, a head gasket can not perform if it does not sit properly. Coolant Contamination Contaminated coolant can also damage the engine and its parts. Debris in the coolant and oil can cause corrosion on the gasket, easily damaging the head gasket. Common Symptoms of a Blown Head Gasket Save your head gaskets by noticing some common symptoms earlier. You can prevent further damage by working on these signs in advance.  An overheating engine shows signs of internal problems. The engine overheats if the coolant or oil is not working correctly. Then, you will have to examine the condition of the head gasket. If you detect white smoke coming out of the exhaust pipe, it is a sign that coolant is leaking into the combustion chamber. It happens when the gasket fails to contain the coolant. Another sign is frequent coolant loss or low levels. If you do not find visible leaks, the gasket might be faulty. Have you noticed milky oil in the engine? When coolant starts mixing with engine oil, an engine oil appears like chocolate milk. It clearly shows that the gasket failed to seal the engine block and cylinder head. A blown gasket also leads to poor engine performance, including loss of power, misfires, and rough idling. You might also notice knocking sounds inside the engine. Another problem you may notice is bubbling in the radiator or coolant reservoir. It happens when air gets trapped in the cooling system due to a blown gasket. Lastly, you will notice compression loss in the engine because a blown gasket fails to perform its primary function. Then, acceleration and engine efficiency become very poor. Diagnosing a Blown Head Gasket A mechanic knows how to diagnose a blown head gasket. However, you can learn some common ways to increase your knowledge. One of the methods is compression testing, which allows you to inspect gasket condition. Other ways are leak-down and block tests, which make it clear whether the gasket is having problems. You can also do visual inspections to ensure nothing is wrong with them. Mechanics also use coolant pressure tests to identify leaks. It is a manual method where tools are used to apply pressure inside the radiator to test the returning pressure.  Consequences of Ignoring a Blown Head Gasket Some people turn a blind eye to signs showing an obvious problem with the gasket. As a result, they end up with serious issues inside the engine, which leads to higher repair expenses. A cylinder head will become warped, or an engine block will face similar damage. If you ignore replacing the damaged gasket, one or both will have to bear the damage. Once the problem shifts from gasket to engine parts, you must prepare to bear more complex repairs. So, it is better to act as soon as you notice symptoms. Repairing a Blown Head Gasket This part is for professionals because they know how to repair a blown head gasket. A mechanic knows how to fix and replace a damaged one correctly. You can approach an expert for this step because it takes expertise to disassemble and reassemble an engine correctly. Also, don’t forget to ask your mechanic to use a top-quality gasket for the engine head for durable performance. It might cost you more, but will give you a long-term advantage. Preventing Head Gasket Failure Here is another reminder to prevent the failure of the head gasket. By taking action on time, you can save lots of money. All the parts and symptoms involved in the process need your attention. So, follow the tips below. Regularly maintain the cooling system to keep the radiator and thermostat in good shape.  Keep checking coolant levels to ensure nothing is wrong with the gasket. You should monitor the dashboard to notice engine temperature to avoid overheating. Don’t forget to inspect oil leaks frequently because that is also a part of it. Conclusion A head gasket is a thin and fragile part of an engine that needs your attention. Since it maintains compression inside the engine, you can expect its importance. Once it blows down, problems start occurring for the engine. As a result, your vehicle’s performance drops down. Taking action on time by noticing symptoms will save you from lots of trouble. In addition, regular maintenance is key to avoiding major and minor problems in your vehicle.  FAQs How does a blown head gasket affect engine performance? It causes oil to leak inside the combustion chamber, which can cause your engine to misfire and show poor performance. Because of this, you may sometimes expect white smoke from the exhaust. Can a blown head gasket be fixed, or do I need to replace the engine? It can be repaired, but the best option is to buy a new one. No one likes to face another problem with a repaired one, so it is better to go with a new head gasket. What causes a head gasket to fail? Frequent overheating, detonation, coolant problems, and lack of oil replacement are some causes. How can I tell if my head gasket is blown? You will notice low coolant levels frequently. You might also find white smoke from the exhaust pipe. Another sign is a lack of engine power and frequent misfiring. People also notice the milky color of engine oil, which means that the coolant and oil are mixing because of head gasket failure. How much does it cost to replace a head gasket? It depends on the vehicle type, model, availability of parts, and service quality your mechanic gives. Is it secure to drive with a blown head gasket? It will only make things worse. The engine will face further load and overheating since the coolant and oil will start mixing. Your vehicle might break down in the middle of a road.

Can you ever imagine how your automobile would perform if there were no fuel injectors in it? Why is it so important, although it seems to be a tiny component? A large engine with many pistons inside depends on the efficiency of a little fuel injector, and you are about to know its worth below. How Does a Fuel Injector Work? The process is pretty simple: a fuel injector supplies a precise quantity of fuel to the engine. This process starts from a fuel tank that supplies fuel to the injector. Then, the engine's combustion chamber gets the optimum quantity that is enough to create combustion. How it happens is mentioned below. The fuel pump transmits fuel from the tank to the injector. It contains an electronic device, an ECU, that helps regulate the flow of fuel. It decides how much fuel is enough for the combustion chamber. The same ECU communicates with an oxygen sensor to mix oxygen and fuel in the right ratio. After that, the fuel flows precisely through the injector's nozzle. Then, the engine receives an optimum amount of fuel to burn for efficient piston movement. What is the Role of ECU in Fuel Injector? If we discuss ECU in detail, it is the brain of a fuel injector. It decides how much fuel a combustion chamber needs to burn. It detects the flow to minimize the quantity if it exceeds the optimum level. The same goes when the fuel quantity exceeds. An ECU communicates with an oxygen sensor for an optimum supply of fuel. It adjusts the right amount of air and fuel in its mixture for the best engine performance. Without ECU, a fuel injector can not monitor the flow rate. Why is it a Mandatory Part of an Engine? An automobile can not move unless its engine starts. Its engine can not start unless it gets the right quantity of fuel to burn. The pistons inside it need a precise amount of combustion through a precise amount of fuel injected in it. An injector sprays fuel inside the combustion chamber to help it create combustion at a high rate. This combustion is mandatory to move the pistons inside the engine. So, if there is no fuel injector, there will be no chance of the engine starting. Precise Fuel Spraying Here is the first benefit of the fuel injector. It sprays fuel precisely into the combustion chamber of the engine to move pistons. If the fuel quantity exceeds, the pistons will not get the right response in the form of combustion. Also, the combustion rate might be excessive, which will be too much for the engine. An ECU inside it keeps the spraying consistent and accurate. That keeps the engine running without backfires or hiccups. If there are any problems like hiccups and backfires, it means the fuel injector needs your attention.  Efficient Fuel Burning Unless the fuel burns efficiently, the pistons will not move at a uniform speed. They need complete support and coordination from a fuel injector to spray an accurate quantity of fuel. This will lead to efficient fuel burning in the chamber, and then the engine will work efficiently throughout the journey. The pressure required to move pistons continuously can come only through precise combustion. This precise combustion requires efficient and optimum fuel burning. A fuel injector is critical in maintaining the engine's combustion process.  Saving the Engine from Less and Excessive Fuel If there is no fuel injector, the combustion chamber will not get the correct quantity of fuel. Either too much fuel will be wasted, or there will be a shortage of fuel in the combustion chamber. In both cases, the engine will suffer. The engine will backfire if an excessive amount of fuel comes from the fuel tank. That will waste the fuel and might cause high carbon accumulation inside the engine. On the other hand, if there is deficient fuel flow from the tank, there will be hiccups. The combustion chamber will not get enough fuel to burn it and create pressure for the pistons to move, resulting in inconsistent fuel flow.  Maintaining the Right Ratio of Oxygen The fuel injector coordinates with the oxygen sensor to maintain the fuel-oxygen ratio. An engine needs both of them to maintain combustion and pressure consistently. If there is no fuel injector, there will be no systematic adjustment of fuel with oxygen. Then, the engine will get either air or fuel at a time. Even if it gets both together, the ratio will not be right. This will cause lots of hurdles for an engine to work smoothly. Conclusion Always choose a fuel injector wisely because it will determine the efficiency of your vehicle's engine. Quality, brand, durability, and functionality should also be considered.

Piston pin In the combustion process, the pistons convert energy into mechanical work. The most preferred material used for manufacturing is aluminum. The main reasons for using aluminum are due to low density, higher reliability, higher thermal conductivity, and better recycling ability. The two methods of manufacturing pistons are mainly casting and forging. Cast piston manufacturing is cheaper due to its simpler method. It is also one of the most commonly used manufacturing processes. However, the forging method of piston pin and piston is a more complicated process in manufacturing, using a solid aluminum alloy. This blog tells you about the manufacturing process of this amazingly durable engine component called the piston. How Are Pistons Manufactured? Forging of the Rod The first piece of a piston begins with the making of an aluminum rod. There are many advantages of using aluminum in the process of the making of the rod. Aluminium is light in weight, rust-proof and easy to cut. Though the rod is very long in legnth, a saw cuts it into smaller pieces at various lengths. The slugs have the small pieces of this rod. Punch Press Utilization When the slug passes through the oven the punch press becomes hotter. Slugs pass through the oven at the same temperature of a punch press. Once the slug is removed from the oven, it is put in the punch. The press exerts almost 2000 tons of pressure in forming the slug into a defined piston shape. The piston is kept cool in the air for about an hour. Passage Through Oven The slugs cool down, after which they pass twice through the oven. It passes through the oven to strengthen the metal. The first time is hot. Then, it is passed through a lower temperature to stabilize it. Excess Metal Removal Then, the lathe cuts out the basic shape of the piston. It helps to give the piston the last shape. Piston is create with little holes on the sides so that oil can pass through. The lathe pushes three rings into the top of the piston. Drilling Piston pinhole Apart from the three tiny holes, one big hole is necessary to enter the piston pin. The large hole is drilled on both sides of the piston. It facilitates attachment of piston to the rod during piston assembly procedure.  Shaving Piston Sides After boring the wrist pin, a milling machine shaves up a few centimeters from all sides of the piston. Shaving occurs when a large bore hole is drilled to go inside the wrist pin. That shaving away of metal lightens the weight of the piston. A milling machine shaves the metal from the sides of the piston near to the area of three rings to give piston its the final shape. The Final Stage In the final stage, the lathe removes a few more millimeters from the top. It makes room for the piston to expand if heat forms inside it. Sharp edges will smooth out. Later on, a machine smoothes the holes in which the wrist pins are placed. This will let the wrist pin fit. What To Keep in Mind in the Piston Pin Manufacturing Process Adherence to Quality Standard Piston quality has to be maintained. The presence of these materials indicates the compliance with some standard standards. The aluminium alloys are classified into particular categories. Even, it comprises different compositions. These structures are Si, Cu, Mg, Fe, Mn, Ni, Zn etc. There is a specific hardness between 90 to 140 HB. Tensile strength must lie between 165 to 275 Nmm2 for the different categories. Eco-Friendliness With climate change concerns opting for sustainable manufacturing should be top of the agenda. You should opt for an environment-friendly piston ring manufacturing method. You should minimize the pollution in the process of manufacturing. You should obtain permission from the State Pollution Control Board before starting up the manufacturing process. Market Demand                You need to study the piston market. It needs to be optimum. For instance, India would definitely offer a good piston market as the automobile industry is growing in the country. The growth rate of automobile sales is expected at 10-15%. Hence, the market of pistons in India is huge. You can compare the growth rate of the piston sales before producing them. It will also enable you to estimate the success rate of the probability for you in this market. Materials There are numerous choices while manufacturing pistons, in raw materials selection. You should also decide that which material is more likely to be in demands in the market. Also, the product where the pistons will be used. Aluminium alloys are used while making pistons targeting on gasoline and diesel engines. As aluminium alloys have some special qualities like low density, high thermal conductivity, and strong consistency. Material Utilization  After finalizing which materials you will be using for the making of the piston, you should also have in your knowledge the proper ratio of those materials. You should well know the ratios of the material and the heat. The structure and heat should be perfect to get the right result. Conclusion Piston and piston pin design plays an extremely important role in an efficient engine that has a healthy, long life. A good piston needs to be strong, lightweight, and able to resist thermal expansion under high-pressure, high-temperature environments. In the same manner, piston pins should withstand the force built up during the passage of forces from the piston to the connecting rod, with proper choice of materials, fit, and lubrication for decreased wear. The piston and the pin together .

Every car owner must know the essential parts of an engine since a lack of knowledge is the main cause of the delay in the replacement of a car part, which can lead to the development of even more serious issues. One of the most crucial components of a car engine is the Spark plug. It is present in every car engine, and no car can function without spark plugs. Timely replacement of these components is essential for ensuring consistent engine performance. Why Does Your Vehicle Need Spark Plugs? An internal combustion engine operates on the basis of a quite easy premise. After combustion, the resultant hot gases expand and exert a force on the piston. The piston is connected to the shaft. The transmission consists of gears moving by the force of the shaft, and the movement of gears is transmitted to the wheels. This entire process occurs many times continuously during the car's operation.  Understanding Plug Design Essentials for Efficiency The construction of spark plugs incorporated two materials: an insulating material and metal conductor. The top part of the spark plug is connected with plug wires. These wires transmit an electric current in a downward direction to the electrodes. The spark plug has two electrodes that are separated by a gap. One electrode receives the current, and the current jumps across the gap to the end of the other electrode. The jump is seen as a spark between the gap. Why is Spark Plug Gap important? The exact maintenance of electrode spacing is crucial, as it dramatically impacts engine efficiency. If the gap is too small the spark will be too weak and this would result in engine inefficiency. A too large a gap means that the spark will not make the jump continuously which would result in disruptive engine performance and in many cases the engine would not even start. If the spark plug gaps are not adequate, there is no need to worry since this problem can be remedied by mechanics and even ordinary drivers if they have some knowledge. The gap is corrected through a tool called a spark plug gap gauge, which is simple to use. First of all, just look at the car manual to learn the recommended gauge setting.  Here are the five steps procedure to gap in a spark plugs Step 1: Find a gap gauge or, better still, a feeler gauge. Step 2:  Clean the spark plug. This should not be a problem if you’re checking a new spark plug, but if you’re checking a spark plug in use in the vehicle, it might be soiled at the contact areas. Avoid using harsh scrubbers when cleaning a spark plug. Step 3:  Check the measurement of the existing gap of the spark plug. Using the gap gauge or feeler gauge you have on hand, slide the device between the electrodes to find the measurement. After taking the measurement, compare it to the recommended setting found in the owner's manual.   Step 4: Make any needed adjustments. Choose the right measurement with your gap gauge/feeler gauge. If you cannot get the correct feeler gauge through the gap, then the gap has to be increased. If the tool goes through the gap without touching the electrodes, it means that the gap is too large and has to be adjusted. You can use your spark plug gap tool in order to bring it back to the correct size. Rotation of the ground electrode in can be made to reduce the gap between them while rotation out can be done to increase the gap between the electrodes. Take special care when it comes to making modifications. Do not bend the electrode any more than a few fractions of an inch. It is hard-wearing but will not withstand much pressure. However, be careful to avoid striking the center electrode as well. If, for instance, you snapped the bottom electrode or arguably subjected the center electrode to some serious harm by prying on it, you will require another spark plug. These center electrodes are usually made of precious metals such as iridium or platinum, which can make it extremely hard to pry them. When gapping the spark plug, it is essential to use the correct spark plug gapping tool.  Step 5: Check the gap again. Perform the same process repeatedly until the tool snugly fits in between the two electrodes. Conclusion The spark plug is an essential component in combustion engines and plays a critical role in igniting the air-fuel mixture within the cylinders. This ignition process is necessary for producing power, and spark plugs in faulty conditions would result in an engine that would not start or run well and would easily reduce the fuel economy, lessened performance, and sometimes engine misfire.

In most cases, a vehicle or car owner rarely attempts to find out how engine oil is beneficial in any automobile engine, especially in advanced generation cars, as we are to the blood in our body system. As ordinary drivers, our primary goal is to push a button or press a mechanical key on the body of the car so that we can use the power of the car engine to move from one place to another. However, we must have some rudimentary understanding of engine components so that if there is a malfunction, we can identify the problem. In this blog, we will learn about a crucial component called the oil control valve. Understanding the Function of Oil Control Valve The function of the control valve is to control the flow of the engine oil in the engine crankcase. Automobile engine oil control is essential for any automobile's smooth engine running. The engine oil solenoid valve/oil control valve is an electronically controlled and activated valve. The amount of oil that goes into the camshaft of the engine, particularly the upper part of the engine. This will enable the internal parts of the engine to retain their functionality when moving within the vehicle. If the camshaft cannot be lubricated at the right times by the oil, then the engine will not be able to do what it is supposed to do properly. What the oil control valve does, therefore, is to open and close the camshaft at the right times when the oil is required and when it is not required. The PCM/ECM will regulate the valve and instruct it on what necessary action it has to perform depending on the requirements of the engine. How To Identify Oil Control Valve Malfunction? The oil control valve in conjunction with variable valve timing technology plays a critical role in boosting engine performance, fuel efficiency, and emissions control. However, It is automatic adjustment of the camshaft timing that optimizes combustion and power delivery to contribute to a well-efficient and environmentally clean operation of modern engines. Low Fuel Efficiency This shows that the oil control valves are still unable to control the oil flow across the entire system. Consequently, putting the engine under pressure and thus using more oil than it is supposed to use. Furthermore, the exhaust valves will also open and close at wrong instances and this will definitely lead to more gas expense. Over time, it would also have a negative impact on the other internal parts of the engine while also significantly decreasing the fuel efficiency. Acceleration is Sluggish The problem with oil usage settings would reflect on the efficiency of the car’s acceleration instantly. You can verify this, by putting the car to a higher speed and check the time it takes to reach the particular speed. Basically, if the vehicle is unable to gain a speed of 60km/h in a short time, then it’s an indication that there is a problem with the oil control valve. Inefficient Engine Therefore, to achieve the best and perfect oil control valve, there is the need to think of the variable valve timing system of the car. It produces the energy used by the vehicle, and this starts automatically when the number of revolutions per minute is above the normal. Still, when there is more load on the car, especially on the upper hill road, it stimulates. With regard to this, if the Variable Valve Timing (VVT) Solenoid is affected, it will cause fluctuation in the revolutions thereby decreasing the power of the car. But now we are in a position to ask why this occurs? Well, the main reason as to why the oil control valve gets damaged is because it is never replaced with new oil. Overheated Engine Keep in mind that the oil control valve controls the pressurized motor oil to change the camshaft's position and angle. The new oil is filtered and flows through the valves, camshafts, solenoids, and many other components that are part of the variable valve timing system whenever the oil control valves open. This produces a kind of cooling in addition to the coolant: it directs heat from these components into the oil pan where they may cool. In the event of oil control valves failure, it may not be possible to get oil to these parts and this results in the temperature of the engine being raised and thereby increasing the wearing out of the components. Conclusion Oil control valves are an important part of VVT units, and these are used to control the flow of oil to your engine so that it runs smoothly and efficiently, not forgetting the performance it shall deliver. These valves help in better fuel economy, low emissions, and enhanced overall power by altering the position of the camshaft. Routine checks and services such as oil change and diagnostics will help your oil control valve to last longer while your car is at its peak performance. Hence, by keeping yourself updated and being more vigilant, you will be able to ensure that your oil control valve is in good working condition and that your engine will not give you problems as well as your ride will not become a bumpy one.

The oxygen sensor operating process is quite simple; all it does is sense the oxygen through the voltage it generates. An O2 sensor generates voltage to measure the oxygen in the engine. It analyzes the adequate amount required to keep the engine breathing fully without causing any suffocation or clogging. Its function is to optimize the flow and fuel inside the engine in a balanced way. Monitoring Oxygen Sensor Flow Rate In detail, it monitors the flow rate of oxygen in the engine. It monitors the consistency and the amount of flow that is required for the engine. Any abnormality it notices leads to the adjustment of oxygen molecules present in the engine and the exhaust system. It regulates the oxygen rate that flows inside the engine and passes through the exhaust.  Basically, it maintains the air-to-fuel ratio.  Optimizes Engine Performance An engine’s performance can be judged by how clean it is from the inside. An oxygen sensor optimizes the engine’s performance by measuring its oxygen level. If the engine is showing rough idling and dark smoke, there is a problem with the O2 sensor. This sensor keeps the sound normal by maintaining the balance between oxygen and fuel. It keeps the flow going by restricting any imbalance inside the engine. As a result, it optimizes the performance for stable drive and quiet operations. The engine does not make strange noises if it is in good condition through proper breathing. Helps ECU to Regulate the Fuel and Oxygen Ratio An electronic control unit (ECU) gets information from this oxygen sensor regarding the presence of oxygen levels. If there is less fuel and more oxygen, that means there will be lean consumption. If there is more fuel and less oxygen, that means there is excessive fuel consumption. Both cases are harmful to an automobile. An oxygen sensor shares the amount of oxygen inside the engine, and shares information with ECU. Then the ECU analyzes it and the fuel-to-oxygen ratio. It helps ECU to maintain an optimum ratio for stable running.  Reduces Emission and Regulates the Combustion System  The same helps the engine to control emissions. When a high oxygen level is detected, ECU has to control the flow of oxygen. Since a higher amount of fuel causes high emissions and fuel combustion, an O2 sensor helps to reduce it. It makes the engine balance the emissions by reducing the fuel flow. In some states, there are Government regulations about the safety of the environment. O2 sensors are mandatory to install with high efficiency in order to help commuters comply. Manages the Fuel Economy If the engine works smoothly, the fuel economy will also benefit. Fuel waste will not occur since the oxygen-to-fuel ratio will be balanced. If that is in balance, there will be fuel economy, which will keep the engine running well. There will be a clear exhaust system, and the engine will breathe well. All this happens because of oxygen sensors installed inside an automobile. What Happens If the Oxygen Sensors Become Faulty? When an oxygen sensor stops working properly, lots of problems start occurring. There are some signs that show that this device is not in good form. If you notice them, that means you need to replace your O2 sensor. Reduction in Acceleration Your vehicle will not get the acceleration it used to have before. There will be a reduction in the acceleration of your automobile if there is a faulty oxygen sensor. Since it is not working properly, your automobile will not get correct information about the oxygen-to-fuel ratio. Then it will not be able to adjust the ratio inside the engine. Ultimately, the acceleration level will start reducing slowly. Your vehicle will not drive as fast as it used to do. Poor Combustion and High Emission  The combustion will be very poor in your automobile, and you will experience high emissions. That will be another sign that your O2 sensor is faulty. If it stops performing well, it will not send the correct information to the ECU. Then the combustion and emission levels will be affected by it. All you will be left with is black smoke releasing from your exhaust pipe. You will Experience Rough Idling If you don’t experience the above signals, there might be this one for you. Your engine will start experiencing rough idling. The sound will be rough, and there will be no smoothness at all. You can inspect the sound by keeping your automobile in a neutral form. High Fuel Consumption  If you experience that your vehicle is consuming more fuel than before, this is another sign. There may be a faulty oxygen sensor that needs to be replaced. Since this device balances the oxygen-to-fuel ratio, it will not do it properly if it is not in good form. There will be more fuel and less oxygen inside the engine. However, then you will face a waste of fuel, which will lead to higher traveling expenses.  Engine Starts to Misfire Then, the last sign you may find is the engine’s misfiring. It happens when your engine does not get enough fuel than it needs. It is the opposite of the above condition. In this case, the oxygen level is higher, and the fuel level is very low. As a result, the combustion process does not get enough fuel to create power. As a result, your engine will misfire and will not generate much power. You might also experience more vibration in the automobile than usual.  Conclusion You are now well aware of what an oxygen sensor is, how it keeps the engine running smoothly, and the warning signs. This will probably help you replace your O2 sensors on time and will keep the engine healthy. If you own a fleet business, you will have to keep your vehicles in good form. For that, you will have to replace these devices on time.