Exhaust

The functions of an exhaust

The exhaust system has three main functions. First, it safely moves exhaust gas from the engine out to the tail pipe. Second, it treats the exhaust to remove harmful pollutants, and third, it acts as a muffler.

The exhaust system is made up of an exhaust manifold that collects the exhaust gases from the various cylinders, a flexible part that absorbs the shocks in the engine, a gas analyzer, a catalytic converter that burns harmful gases, and a pipe with a muffler on it. Bands, clamps, and supports hold everything together under the vehicle.

What are the signs indicating a faulty exhaust?

The gas analyzer and the catalytic converter are the two most expensive parts. The gas analyzer sends messages to the central computer, while the catalytic converter burns toxic nitrogen oxides. Without engine maintenance and tune-ups, these two exhaust system parts will stop working properly and need to be replaced. That’s when the Check Engine light will come on.

As said, exhaust gas contains a number of pollutants and particulates. The catalytic converter scrubs some of those harmful substances. Catalytic converter eventually were out and need to be replaced. Extend catalytic converter life with fuel system cleaning and air filter replacement. Improperly working exhaust system won’t pass your state emissions test.

So if you see smoke, smell gas, feel vibrations, or the Check Engine light comes on, ask a certified NAPA AUTOPRO technician to take a look at your vehicle. A simple inspection of the exhaust system or a quick repair is the best way to avoid more serious problems down the road.

How often do you need to maintain your exhaust?

The matter in exhaust may be of better quality these days, but if you don’t give your exhaust system a minimum of maintenance, you could still wind up facing expensive repairs.

It goes without saying that the system is constantly exposed to hot and cold temperatures and all sorts of weather conditions (rain, snow, and mud). That’s why we recommend you have a certified NAPA AUTOPRO technician inspect the system for any defective parts. But there’s more: before you have your exhaust system serviced, you must first service the engine.

Learn more about the exhaust system from our NAPA AUTOPRO experts in the video below: