That’s why if you notice that you’re going to the gas station more often than usual, you might want to get your vehicle checked for a potential exhaust manifold leak. Not only will this compromise the performance of your vehicle, but also cause poor fuel mileage. By tricking the oxygen sensor that the engine has a lean mixture, the engine control unit (ECU) will increase the fuel delivery to make up for the low amount of fuel. In some cases, the engine computer will respond to the perceived lean running condition by making the air-fuel mixture richer - which can cause misfiring.Īside from the sounds, smell, and performance, an exhaust manifold leak will also affect your wallet negatively. This can impact your daily driving experience, so it’s recommended to have your car checked immediately.Īn exhaust manifold leak will cause poor performance because it can affect the fuel delivery of your vehicle. One of the signs that you need to bring your vehicle to the mechanic is if you notice a loss of acceleration. When this happens, you’ll notice that your check engine light is on. But in this case, the sensor is misinterpreting the leak. ![]() This usually happens when there’s too little fuel in the air-fuel mixture. When you have a leak in your exhaust manifold, the oxygen sensors in your vehicle will see the situation as a lean running condition. But another reason is because of an exhaust manifold leak. It could be because you have a faulty gas cap that allows the fuel vapors to escape into the air. There are many reasons why your check engine light is on. When you notice the toxic and burning smell, there’s also a chance that exhaust fumes are already present inside the cabin, which can affect your health. Other than the odor, this could also cause premature wear and physical damage to other components of your engine. This can be the reason why you’ll also notice a burning smell. This is because the harmful gases have escaped into the air before going into the catalytic converter to be converted to be a less harmful gas.Īs the first section of your vehicle’s exhaust system, the gases are still extremely hot coming from the combustion chamber. That’s why, if you have an exhaust manifold leak, you might notice a toxic smell. This is because the manifold will expand, which causes the leak to close temporarily.Įxhaust gases are supposed to go through the entire exhaust system. The noise will be its loudest during a cold start and may diminish as the engine warms up. Cracks and loose parts will cause a leak that creates a tapping or hissing sound. ![]() For instance, one of the signs that you need to check your exhaust manifold is if you’re hearing strange noises. Read on!Īs a vehicle owner, you need to train your ears to differentiate the sound of a well-maintained car and one that has issues. ![]() For this reason, you need to know the top exhaust manifold leak signs. But if there is a problem with your exhaust manifold, toxic gases can leak out, putting your health at risk and causing problems for your vehicle. Its main role is to take the exhaust gases to the catalytic converter, where harmful substances such as nitrogen oxides, carbon monoxide, and hydrocarbon are converted into less harmful ones. What are the signs that you have an exhaust manifold leak?Īn exhaust manifold is a part of your vehicle’s exhaust system, directly bolted to the engine block.
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