Things to Know About Your Vehicle's Exhaust System - Service Questions serving Sacramento, CA

April 23, 2019

The exhaust system in your Subaru is vital to its safe and effective functioning. It helps your Subaru perform at its best, and it also helps keep you safe from potentially dangerous gases. Despite its importance, it's easy to forget about--until something goes wrong, that is. The technicians at Shingle Springs Subaru get plenty of questions about the exhaust system, so we've put together this information page. If you have more questions, please feel free to contact us by phone or online.

A cloud of white exhaust emissions.

3. What Does the Exhaust System Do?

The BOXER® engine in your Subaru is powered by combustion. This process creates exhaust fumes, and these fumes need to be safely expelled out of the tailpipes at the rear of the vehicle. The main function of the exhaust system is to make sure that all of the exhaust goes where it's supposed to. While this is the primary function of the exhaust system, it also performs many other functions, from decreasing the sound of the engine to reducing harmful emissions and improving efficiency. In fact, modern exhaust systems have sensors in them that send information to the vehicle's computer. It takes this information and makes necessary adjustments to how the engine is operating.

A close-up view of an exhaust manifold detached from the other components.

2. What Are the Parts of an Exhaust System?

The exhaust system in your Subaru has lots of components, from oxygen sensors to the hangers that keep the system in place. However, all exhaust systems have four main components that are crucial to its functioning.

The first is the exhaust manifold. This is connected to the engine, and it directs exhaust gases from the combustion chambers.

A technician works on the underside of a vehicle that's raised up on a lift.

The gases then make their way through the catalytic converter. This part gets hot enough to burn any fuel that made its way through the combustion process and converts it to less harmful gasses.

After being cleaned by the catalytic converter, the exhaust gases move through pipes, eventually being expelled through the tailpipe.

Before exiting through the tailpipe, the exhaust gases pass through the muffler

1. How Do You Know if Your Exhaust System Has a Problem?

There are many symptoms to keep an eye out for if your exhaust system has a problem. Trouble with the muffler will often make your Subaru sound much louder. If there's a problem with the oxygen sensors or the catalytic converter, the check engine light may turn on, and your fuel efficiency may decrease. And if you smell exhaust in your cabin, there could be a dangerous exhaust leak. Any of these problems should be looked at immediately.

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Shingle Springs Subaru

4045 Wild Chaparral Dr
Directions Shingle Springs, CA 95682

  • Sales: 530-677-8771
  • Service: 530-677-8771
  • Parts: 530-677-8771