The exhaust system removes the harmful gases produced during the engine combustion process. A properly functioning exhaust system helps reduce emissions and ensure a quiet and comfortable driving experience. A car’s exhaust system is composed of various components and the exhaust manifold is one of them.
The exhaust manifold is made of stainless steel or cast iron for durability, yet it is not impervious to damage. Read on to learn about the signs of a failing exhaust manifold for the timely repair of this car part.
What is the Function of an Exhaust Manifold?
The primary function of the exhaust manifold is to collect the hot, high-pressure exhaust gases from the engine cylinders and channel them away from the engine. In addition to directing exhaust gases away from the engine, the exhaust manifold also helps to reduce engine noise by muffling the sound of the exhaust gases.
The parts of the car exhaust system require routine maintenance as they endure harsh conditions making them prone to wear. Although the exhaust manifold is made of stainless steel or cast iron to withstand high temperatures, it may also deteriorate with time.
Signs of a Failing Exhaust Manifold
A leaked or damaged exhaust manifold would allow the release of toxic gases in the car cabin. Not only a failing exhaust manifold would put the car occupants at risk, but it can also decrease the car’s efficiency.
Let’s go through the signs of a failing exhaust manifold in detail.
Check engine light turns on
A failing exhaust manifold can trigger the car’s check engine light. This is because the engine’s oxygen sensor may detect an issue with the exhaust gases. This in turn may lead to an error code being recorded by the car’s computer resulting in the activation of the check engine light.
Poor engine performance
A failing exhaust manifold can also lead to poor engine performance, including reduced power and acceleration. This is because the exhaust gases are not being properly directed away from the engine, causing back pressure and reducing the engine’s ability to breathe. As a result, you may also experience car exhaust backfiring which is a common sign of a leaking exhaust manifold.
A cracked exhaust manifold or other rapid damage to it will result in an equally sudden loss of power. Whereas a loose manifold or one with a damaged head gasket tends to slowly reduce acceleration power. If left unchecked for a long period, a blown head gasket can cause great car damage.
Strange engine noise
One of the most common signs of a broken exhaust manifold is strange engine noise. This noise may be a hissing, ticking, or popping sound and can become increasingly noticeable as the engine RPMs increase. The sound may be due to the escaping gas as a result of a cracked or leaking exhaust manifold. Water coming from the exhaust indicates a failing exhaust system.
These strange noises also indicate that the engine isn’t retaining appropriate compression any more. It is advised to avoid driving your car any further until you can get it to the repair shop. This will help prevent heat buildup from harming other components of the fuel and exhaust system.
That said, beware of the fact that the UAE law has a limit of 95 decibels for car noises. Therefore, driving a noisy car in the UAE can get the driver fined 2000 AED and 12 black points.
Burning smell from car
If there is a strong smell of exhaust fumes or a burning smell inside the car, this may be one of the exhaust manifold leak symptoms. This can be dangerous, as the exhaust fumes contain toxic gases which can cause carbon monoxide poisoning.
Poor Fuel Economy
A failing exhaust manifold can cause the engine to run inefficiently, resulting in decreased fuel efficiency. This is because the engine is not able to properly expel exhaust gases, leading to reduced power and increased fuel consumption.
Apart from the above-stated symptoms of a failing exhaust manifold, you can also physically inspect the manifold for visible damage. At times, you might observe a cracked exhaust manifold. The crack can be hairline thin, it may occur on the part of the manifold where it is forced against the engine. That said, it is advised not to rule out the issue of the exhaust manifold if you can’t see any visible damage.
This was all about the signs of a failing exhaust manifold. If you experience any of these signs, it is important to have your exhaust manifold inspected and repaired by a qualified mechanic to prevent further engine damage. If the extent of damage is severe, you should consider changing your car exhaust system.
That said, if your car has undergone irreparable damage, it is better to switch to another car. Explore this plethora of used cars for sale in the UAE and find your ideal ride.
Stay tuned to dubizzle car’s blog for more information on car parts and accessories.
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