The exhaust manifold is one of the parts of the exhaust system, designed to receive and distribute exhaust gases formed after the combustion of the air-fuel mixture. During the operation of the engine, the exhaust manifold undergoes expansion and compression due to temperature fluctuations. Over time, the metal burns out, cracks appear, leading to a leakage of exhaust gases. These gases enter the engine compartment and the cabin, negatively affecting the health of the driver and passengers.
When such symptoms appear, it is necessary to diagnose the entire exhaust system of the car. If a malfunction of the exhaust manifold is detected, it is essential to repair or replace it. Otherwise, exhaust by-products can enter the engine, leading to damage to expensive components. If the exhaust manifold has minor cracks or superficial defects, it can be repaired, for example, by welding the cracks or fixing minor damages. It might be sufficient to replace the sealing gaskets. Sometimes, the exhaust manifold can become clogged with deposits or carbon. In this case, it can be cleaned and serviced to restore its normal performance.
If multiple cracks are found on the exhaust manifold, attempting to repair it by welding is not advisable. It is not recommended to replace it on your own, as it can be unsafe and challenging. The job requires skills and knowledge of car mechanics.
The exhaust manifold muffler replacement should be done in a car service environment. Special equipment and tools are used to remove the exhaust manifold. Before removing the exhaust manifold, the mechanic treats the fasteners with a special compound. The complexity of the removal is also increased because different car brands may have various modifications of the exhaust manifold installed.
If repair work is not related to the gasket burning out, it still needs to be replaced with a new one.
The lawn mower sound is typically due to a crack in the combustion system. A vehicle's combustion system features many components, such as cylinders, spark plugs, and exhaust, which are all susceptible to damage. These are the most common issues involving these parts: