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Your exhaust system is not only tasked with reducing engine noise, but it also is responsible for reducing harmful emissions from entering the atmosphere. Broken or leaky exhaust parts can compromise your vehicle’s engine performance, increase emissions, and even let toxic gasses into your cabin, undetected.
A muffler is one component of a vehicle’s exhaust system. Its job is to reduce the noises of engine combustion and evacuation of exhaust gasses. The entire exhaust system starts with your engine’s exhaust valve and exhaust manifold and continues through a series of pipes to at least one catalytic converter, muffler, and tailpipe.
Dual exhaust systems may employ one or two catalytic converters and mufflers, depending on the configuration. Single exhaust systems are far more common and employ a single catalytic converter and muffler, occasionally featuring two tailpipes.
The simplest muffler replacement takes 30-60 minutes depending on your vehicle. Allow another hour or two if the mid-pipe or down-pipe also needs service. These pipes can be difficult to reach and may need to be replaced along with your muffler.
The lifespan of a muffler is traditionally estimated at 40,000-80,000 miles. But your muffler may fail sooner under harsh driving conditions like cold weather, corrosive road salt, and damage from road debris and potholes. You can help mitigate corrosion by frequently having your vehicle’s undercarriage washed, and choosing a replacement muffler made of corrosion-resistant steel when the time comes.
A car with a broken muffler may or may not be safe to drive. Muffler damage often goes hand in hand with an exhaust leak – a serious safety hazard. Carbon monoxide in your cabin can affect your driving ability and cause health problems before you realize it’s there. Any problem with your exhaust system should be evaluated by a qualified mechanic.