Noisy Muffler? Your Exhaust System may have a leak!

Until the muffler starts to make a lot of noise and a problem develops, not many drivers give much thought about their vehicle's exhaust system. Some drivers don't understand the job of the exhaust system. It does more than keep your car quiet--it routes toxic fumes away from the passenger cabin, helps your engine run properly, maintains optimum fuel efficiency, and reduces polluting emissions.

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The most common problem that develops in the exhaust system is a leak of the toxic fumes and gases. Depending on your vehicle, the cost to repair an exhaust leak and other muffler repairs can range widely. Delaying a needed repair can make it cost more because continuing to drive with an exhaust leak or bad catalytic converter can damage other things in your vehicle's operating system.

An obvious sign of problems is a deep or loud rumbling sound coming from your car. Don't just turn up the radio to drown out a loud muffler. Here are a few other issues to watch for:

• Catalytic converter -- The catalytic converter is one of the highest priced exhaust system parts and in some vehicles, such as SUVs and trucks, it may be prone to theft by scrap metal thieves. If your catalytic converter has been stolen, you'll immediately notice a loud sound and altered vehicle performance upon startup. A failing catalytic converter may sound like someone shaking a box of rocks when your vehicle is idling when parked or stopped in traffic.
• Exhaust leak -- Leaks can be caused by road conditions and rust. Because the muffler is mounted on the underside of your car, it is exposed to a lot of road conditions that can cause it to break down over time. The normal wear and tear that an exhaust system is exposed to means that older cars are especially vulnerable to leaks and should be inspected
• Rust -- The water vapor produced by the catalytic convertor can also be problematic. When you only take your car for a short trip, the water vapor produced does not get expelled. So, it condenses back into water, which can cause rust. Sulfur is another by-product of engine emissions. If it mixes with water left in the exhaust system, it can form a corrosive acid that can eat away at the exhaust system.

Note to Remember: Before heading out on our summer road trip, be sure to have the exhaust system and muffler inspected along with the other systems of your vehicle.

Have a noisy muffler and need an inspection of your exhaust system? Contact the ASE Certified Technicians at Precision Automotive today by calling (406) 248-2838, or go on-line to www.pricesprecisionauto.com for more information. Our Tech-Net professional auto center in Billings, MT, also services vehicle owners in the areas of Shepherd and Laurel, MT.