A cracked or leaking exhaust manifold can create bigger problems due to the hot gases that are escaping. In most cases it will also trigger the Check Engine light. ![]() If there is a leak in the exhaust manifold it can cause the engine to run louder, sputter and run unevenly. Leak in Exhaust Manifold: The exhaust manifold collects exhaust gases from the engine. This will increase the noise levels of the car. A rusted tailpipe will often develop holes or will completely fall off at some point. Eventually the car will not run at all as the catalytic converter becomes totally blocked.īroken Tail Pipe: The tail pipe comes out of the muffler and exhausts the gases and fumes into the air. This is what causes the strong rotten egg smell. As the converter fails it will no longer be able to burn off the unburned hydrocarbons in the exhaust, or break down the sulfur created by the engine. In most cases, a failing catalytic converter will also trigger the Check Engine light. Other symptoms include a significant drop in gas mileage and an increase in exhaust fumes.Ī failing muffler should be repaired or replaced immediately as an exhaust system that is not working properly can lead to additional damage to the engine or catalytic converter.įailing Catalytic Converter: The catalytic converter is a key component of the exhaust system and if it is failing the engine will be louder than normal, will run rough and the smell of rotten eggs will be coming from the exhaust. ![]() A car that is running louder than normal is often due to a failing muffler. Eventually it will start to fail completely. Over time a muffler will rust and develop holes and cracks. Failing Muffler: Mufflers are constantly exposed to heat and pressure not to mention road salts, grime and the weather.Service type Engine is running louder than normal Inspection
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