![]() If you have a leaky exhaust manifold, you will notice a very strong odor inside or outside your vehicle. Not all exhaust fumes are odorless, just carbon monoxide. Only use this sign if you’ve already experienced another symptom and are trying to verify your suspicions. Not only that, but strange engine noises could be due to other kinds of engine problems as well. However, it is hard for most people to tell the difference between different engine sounds, exhaust sounds, or even a vacuum hose leak. If you hear sounds that seem like air leaking out or even whistling, then you obviously have a problem. Place your foot onto the gas pedal and pay attention to any noises that don’t seem right. Related: 15 Causes of Poor Fuel Economy #4 – Unusual Noise When Accelerating These leaks make it harder for your engine to perform which, in turn, lowers your fuel efficiency. If you notice that your vehicle requires more gas than usual, then it could be due to a leaky exhaust system. If you don’t do anything about it, the vibrations will be felt on the steering wheel. You will first begin to notice these vibrations coming from the gas pedal. But if the leak is big, the vibrations will be bigger as well. See Also: 5 Ways to Make Your Exhaust LOUDER #2 – Vibrating Gas PedalĪnytime there is even a tiny leak, the car will vibrate. So, if you don’t see a crack or leak coming from the piping, then check the gasket to see if there’s a flaw there. This gasket is constantly heated and cooled just like the piping. Remember that a gasket lies in between the piping of the exhaust manifold and the engine block. When you start up the engine and hear an increasingly loud noise coming from around the engine, it is often the telltale symptom of an exhaust manifold gasket leak. Step 5 - Refit the ManifoldĪfter you have replaced the gasket, you can screw the manifold bolts back into place, and tighten until the bolts are holding the exhaust manifold tightly onto the car engine.Below five of the most common symptoms of leak in your exhaust system: #1 – Noise That Gets Louder Fit the new gasket by pushing it into the cylinder head. These are the parts most likely to leak, but you should examine the rest of the manifold for damage at the same time. You may need to hold the gasket with a rag or piece of cloth in order to get a proper grip on it. Once you have freed the manifold, take off the gasket by sliding it towards you. You should also avoid taking the manifold out of the engine completely, as this would involve disconnection it, and could be a long job. The hammer has to be rubber, or you run the risk of harming the manifold. In this case, you should strike the top of the exhaust manifold with a rubber hammer. You may find that it becomes stuck, or won't shift. Unscrew these bolts and then pull the manifold away from the body of the car. Look for two large bolts, one either side of the manifold. ![]() You will need a wrench to unscrew these bolts, as they hold the exhaust manifold onto the head of the engine, and so have to be tight. Take off the bolts that keep the manifold in place. ![]() Once you are ready, and have located the leak, you can begin to extract the manifold. If you are not sure when the car was last used, but need to work on the exhaust straight away, put on a pair of safety gloves. Be careful when you touch the manifold, as they can become very hot. When looking for these kinds of problems, the manifold will need to be as cool as possible, and you should leave it parked, with the engine turned off, for about 2 hours before you proceed. You should also look under the bonnet to check that oil is not leaking into the manifold. Before you can begin to work on the leak, you will need to check your engine, including the exhaust manifold area, to ensure that there are no further leaks which need to be repaired. ![]()
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