How Do You Know If You Need A New Muffler?

Mufflers are required components on all vehicles that run on U.S. roads.  The job of the muffler main purposes is to reduce the noise produced by the exhaust system, so a sudden loud noise while accelerating could mean that the muffler is no longer working. Unfortunately, because mufflers are most effective when unheard and unseen, they are also out of mind”, “out of sight when it comes to maintenance. 

Typically, mufflers can last 5 to 7 years on most vehicles.  Of course, there are some conditions that can cause a muffler to go bad sooner than that, such as:

• Driving on salted roads in wintry conditions, or living near the ocean. 
• Hitting potholes, speed bumps, or other objects in the road.
• Excessive use or changing the design not recommended by the manufacturer.
• Condensation from the exhaust pipes causing rust in the muffler.

So how do you know if you need a new muffler? Regardless of the cause, there are several signs that either the exhaust system wants help:

1. Your muffler is making loud Noise – A muffler in good condition will operate quietly in the background. Exhaust noise that is louder than usual is generally the result of an exhaust leak in the muffler, caused from a hole or other damage to the muffler, losing its efficiency in directing emissions away from the vehicle and reducing engine noise.  It can really increase the noise by causing misfiring in the engine, particularly when slowing down. 
2. Decreased Fuel Efficiency – An exhaust system that is working correctly will mean better fuel economy.  If there is an issue, you will notice that you are filling up the tank more frequently.
3. Bad odor – This is one of the most dangerous issues of a bad muffler and exhaust system.  If there is a leak or other issue, it could cause the fumes to become trapped.  This is hazardous for the health of passengers, which could lead to sickness or even death. If you smell anything unusual, have your exhaust system checked by a certified auto mechanic as soon as possible.

Do you want to know more about how do you know if you need a new muffler? Call our ASE Certified technicians at Expert Car Care for more information about your vehicle’s exhaust system and to make an appointment. Our auto repair shop proudly serves residents in the community of West Allis, WI, and surrounding area.