![]() ![]() 3) A Burning Smell From the Engine BayĪnother common symptom of problems with the exhaust manifold is a burning smell from the engine bay. A leak or crack can cause the vehicle to experience a reduction in power, ability to accelerate, and fuel efficiency due to the loss of backpressure. If the pipes become damaged or corroded, they can sometimes produce an exhaust leak. Performance issues are a common symptom of a problematic exhaust manifold. 2) A Decrease in Power, Acceleration, and Fuel Efficiency This usually sounds like a hissing or tapping, which may become louder during acceleration. If the exhaust pipes or manifold break or crack they can cause an exhaust leak which, in turn, causes a noisy engine. One of the first symptoms of a problem with the exhaust is excessive noise. Here are some classic signs of a damaged exhaust system: 1) A Noisy Engine Exhaust Usually, a problem with the exhaust system will be quite obvious. While exhaust systems are built to withstand the high stress and heat conditions of your engine’s exhaust, they are still prone to corrosion and rust over time due to the high-stress conditions they are constantly under.
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