Exhaust System Overview

The exhaust system of a heavy-duty diesel truck is responsible for controlling and directing the gases that are produced by the engine. These gases, also known as exhaust, are created as a byproduct of the combustion process that powers the engine. The exhaust system is made up of several components, including the exhaust manifold, catalytic converter, muffler, and tailpipe.
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Exhaust Manifold

The exhaust manifold is the first component in the exhaust system. It is a cast iron or steel pipe that is attached to the engine's cylinder head. The exhaust manifold collects the exhaust gases from the engine's cylinders and directs them into the rest of the exhaust system.
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SCR Catalyst and DOC

The second component in the exhaust system, the Selective Catalytic Reduction (SCR) Catalyst and the Diesel Oxidation Catalyst (DOC) work in tandem. They are contained within a metal canister that is filled with a special material that converts harmful pollutants in the exhaust gases into less harmful substances like nitrogen, water, and carbon dioxide.  The SCR catalyst and the DOC helps to reduce emissions and improve air quality.
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Muffler

The muffler is the third component in the exhaust system. It is a metal canister that is designed to reduce the noise that is produced by the engine's exhaust gases. The muffler is located in the middle of the exhaust system and uses a series of internal chambers and perforated tubes to dampen the sound.
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Tailpipe

The tailpipe is the final component of the exhaust system. It is a metal pipe that extends from the muffler to the back of the truck. The tailpipe is responsible for directing the exhaust gases out of the vehicle and into the atmosphere.

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Common Exhaust System Issues

At Inland Truck Repair, we have seen a variety of exhaust system issues in heavy-duty diesel trucks. Some of the most common issues include
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• Leaking Exhaust: A leak in the exhaust system can be caused by a hole or crack in the exhaust manifold, catalytic converter, muffler, or tailpipe. This can result in a loss of power and decreased fuel efficiency.
• Clogged SCR Catalyst and DOC: The SCR catalyst and DOC can become clogged with debris or other contaminants, causing a reduction in exhaust flow and leading to a decrease in engine performance.
• Muffler and Tailpipe Rust: The muffler and tailpipe can rust over time, causing holes and weakening the structure of the exhaust system.
  
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Exhaust System Repair Services at Inland Truck Repair

At Inland Truck Repair, our team of skilled mechanics is equipped to handle all types of exhaust system repairs for heavy-duty diesel trucks. We use state-of-the-art equipment and techniques to diagnose and repair exhaust system issues, including
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• Exhaust Manifold Repair: We can repair or replace the exhaust manifold to restore proper exhaust flow and improve engine performance.
• Replacement of the SCR Catalyst and DOC: We can remove and replace the SCR catalyst and DOC as needed to restore proper exhaust flow and emissions control.
• Muffler and Tailpipe Replacement: We can remove and replace the muffler and tailpipe to restore proper exhaust flow and reduce noise.
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At Inland Truck Repair, we understand the importance of keeping your heavy-duty diesel truck in top condition. Our exhaust system repair services are designed to improve the performance and longevity of your vehicle. Contact us today to schedule an appointment for your heavy-duty diesel truck's exhaust system.