What is a Muffler and What Does it Do?
The muffler reduces engine noise as exhaust gases exit the system. It’s located at the rear of the vehicle, connected to the tailpipe, which channels sound and harmful emissions away from the vehicle. As a key component of the exhaust system, a damaged muffler can affect overall performance. Learn how to recognize the signs of a failing muffler.
What Causes a Muffler to Fail?
Corrosion
Salt, water and road grime can cause the muffler’s exterior to rust and corrode. Internally, rust may form if the moisture that is a byproduct of the heating and cooling of the muffler accumulates and fails to drain properly.
Impacts
Hitting a pothole or driving over debris in the road can damage the muffler. These impacts can cause holes and cracks that can lead to an exhaust leak.
Installation Issues
Improper installation increases the risk of premature failure. Poor welds on universal fit mufflers or incorrectly placed clamps can compromise performance.
Wear and Tear
Subject to normal wear and tear, mufflers don’t last forever and must be replaced. Under normal conditions, you can expect a muffler to last 5-7 years while vehicles driven in wet or snowy climates may require earlier replacement.
Symptoms of a Bad Muffler
Don’t ignore the signs of a bad muffler – left unaddressed, they can escalate into engine issues requiring additional repairs. If you notice any of the following symptoms, schedule an inspection with your auto technician.
Loud Noises
When working properly, your muffler is silent, working in the background. Loud sounds from the rear of the vehicle often indicate a hole in the muffler. Even a pinhole can allow exhaust gases to escape without being silenced.
Exhaust Smell
If the muffler can no longer contain harmful gases, fumes may seep into the cabin. As with noise issues, a hole is typically the cause.
Rattling
If any of the tubes inside the muffler become loose or rust away, they can bounce around inside the muffler and make noise.
Can You Drive with a Damaged Muffler?
If you suspect that your muffler might be damaged, don’t wait – get your vehicle inspected by an auto technician. As a key part of the exhaust system, a damaged muffler can reduce the effectiveness of the entire system.
Selecting the Right Muffler
When you need to replace your vehicle’s muffler, look to Walker for a quality muffler that delivers OE-style fit and performance for every application. Walker has the right muffler for your vehicle; choose from Quiet-Flow® SS, SoundFX® Direct Fit and SoundFX® Universal.
Learn more about quality exhaust parts, find the right car part, or find a local repair shop today.
The content in this article is for informational purposes only. You should consult with a certified technician or mechanic if you have questions relating to any of the topics covered herein. DRiV and its affiliates (including Federal-Mogul Motorparts LLC) will not be liable for any loss or damage caused by your reliance on any content.