Visible Cracks - Depending on the vehicle and the arrangement of the engine and ancillaries, you may be able to inspect the manifold(s) yourself. Increased Fuel Consumption - In addition to the noticeable loss of power, the loss of back pressure can also have a negative impact on fuel consumption which can increase exponentialy. In most cases, there is a sudden loss of power, especially when accelerating. Loss of power - A crack will result in a loss of backpressure, which will noticeably affect engine performance. When you open the hood, you will often notice a strong exhaust smell, especially around the manifold. So raise the hood, start the car, and listen carefully.Įxhaust Smell - As mentioned earlier, if there is a crack in the manifold, some of the harmful exhaust gasses can enter the passenger compartment instead of being directed downstream to the catalytic converter or particulate filter and out the tailpipe. Often, these noises are more pronounced when the engine is cold. Depending on the pressure under which the gasses are escaping and the severity of the crack, you may hear a whistling or clicking sound. Strange noises - If exhaust gasses are escaping through the crack, you will hear strange noises while driving. We also discussed whether a crack can be repaired, and whether it's worth it in the long run. We spoke with several experienced mechanics and compiled a list of symptoms that are associated with a cracked manifold. In addition, the exhaust gasses that escape through the crack can have harmful effects on the environment and your health, because in some cases they make their way inside the cabin. When this happens, the engine can overheat, which can cause permanent damage. In-line engines, for example, usually have one, while V-engines have two.Ĭracks in these components occur, especially in older vehicles that are already heavily worn. Depending on the arrangement of the cylinders, an engine may have one or two of them. In 2375, the crew of a duplicate version of Voyager, created by a substance known as the " Silver Blood," attempted to purge their warp field of interstellar dust with which it had become contaminated, but was unable to do so as the vessel's exhaust manifolds had disintegrated, due to exposure to a form of subspace radiation.As an important component of an internal combustion engine, the exhaust manifold diverts gasses from the cylinders to the exhaust system. In 2373, Captain Janeway assigned Neelix the task of scrubbing the USS Voyager's exhaust manifolds for a period of two weeks, as punishment for his unauthorized attempt to trade some of Voyager's warp plasma for a map of the Delta Quadrant beyond the region known as "the Nekrit Expanse." ( VOY: " Fair Trade") In 2154, after a devastating attack by the Xindi, T'Pol ordered Commander Tucker to make inspecting the damage done to Enterprise's exhaust manifolds a priority, as it was crucial that impulse drive be restored as soon as possible, in order to facilitate their mission of locating the Xindi weapon. In 2152, upon discovering a mysterious vessel from the 31st century, initial scans indicated no signs of any plasma exhaust ports, leaving the Enterprise crew confused as to the vessel's method of propulsion. Enterprise's chief engineer, Charles Tucker, initially suspected the constriction was due to EM residue buildup in the exhaust ports, however, upon checking, discovered that was not the case. In 2151, Enterprise NX-01 experienced a number of malfunctions as a result of an unexplained constriction in the flow of the ship's plasma exhaust. Vectored exhaust ports, as those installed on the Delta Flyer, lent themselves to increased speed and maneuverability. Exhaust manifolds could often get clogged with EM residue, and required periodic purging. Exhaust manifolds, or exhaust ports, were components of starships responsible for venting plasma from the vessel's propulsion systems into space.
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