BMW 740i Muffler
Easy Troubleshooting Tips for Your BMW 740i Muffler
The seamless and peaceful ride that you experience with your BMW 740i is made possible by the efficient muffler in its exhaust system. This device minimizes the noise of the exhaust in your vehicle's internal combustion engine. It is located lengthwise underneath your vehicle and blows backwards at the rear. However, due to age, corrosion, and other factors, your BMW 740i muffler would eventually wear out. This could then be the culprit behind some of your car problems, such as hissing noises and even poor fuel economy. Here are some tips on how you can check if your muffler is still in good terms with the exhaust system:
Your BMW 740i muffler is meant to minimize the noise that your engine makes and not to cause it. So when it starts to get loud down under, then maybe your muffler is causing a riot. To confirm whether your muffler is acting up, you can start by removing it from your vehicle. Just make sure that it has cooled down since it can be very hot even after the engine has died. Shake the muffler and listen if there is a sound from inside. If you hear a soft rumbling and a small amount of debris falls off, then your muffler is still okay. But if you hear a rather loud crackling and a lot of debris comes out, then it is most probably deteriorated. Replace the muffler with a new one immediately to get rid of the noise.
A hissing noise that could be caused by a crack or hole in the muffler could be very dangerous. When your muffler leaks, it puts you and your passengers at risk due to the carbon monoxide content of the gas. It could enter the passenger compartment via the cowl vent or firewall and cause poisoning. A little percent of this deadly gas could already cause headache and nausea immediately. It can also burn spark plugs and even plug boots. Before this happens to your muffler, inspect it for any signs of corrosion that might damage it and cause it to crack. Look for any discolored paint near the exhaust ports. Check the exhaust pipes connected to the muffler, the seams in the shells of the muffler, and even the hump in the exhaust pipe for any leaks. Replace any rusted or damaged part immediately.