General Truck Repair
April 11, 2022

6 Indicators Your Heavy-Duty Truck Needs Exhaust Repair

Maintaining your heavy-duty truck's exhaust system is crucial for its proper functioning and your health. Exhaust issues can damage other parts and cause back pressure. If you suspect a problem, bring it to a specialized and knowledgeable repair shop for prompt attention.

Heavy duty truck exhaust repair

Your heavy-duty truck exhaust system should always be in good operating order since it plays a crucial role in how well it runs. Failing to keep your exhaust in good shape can not only have an effect on your after-treatment system, but it can be harmful to your health as well. An unreliable exhaust may also cause exhaust back pressure, which can harm other parts of your heavy-duty truck to the point where you might not be able to drive it anymore.

It's crucial to bring your heavy-duty truck to a qualified shop that specializes in exhaust repair and replacement if you think you may have a defective exhaust. They should also be knowledgeable and experienced enough to work on a wide array of after-treatment systems.

How does the exhaust system work? 

Let's define an exhaust first. They perform as advertised, reducing the loud sounds made by your engine so that your heavy-duty truck may continue to function effectively. Alongside this, they also facilitate the treatment of exhaust using a DPF, SCR, and DOC catalyst. With thousands of combustions and pulsations occurring every minute, engines generate a lot of power. Your exhaust is essentially a cylindrical part that is connected to the exhaust pipe to filter loud sounds. You will hear excessive noise and have additional issues if your exhaust isn't working correctly. Here are a few indicators that it's time to repair your exhaust. 

Noisy environments

Loud, odd sounds or roaring emanating from the heavy-duty truck are the most typical signs of a bad exhaust. If you suddenly hear a loud noise while accelerating on the road, your exhaust is failing, if it hasn't already. An exhaust's job is to decrease noise emanating from the exhaust system. Cracks or perforations in the exhaust often result in such sounds.

Your exhaust, where the chamber lessens the intensity of the vibrations caused by the exhaust, is where exhaust passes through. As a result, less noise is produced. When your exhaust is broken, vibrations cannot be controlled properly and cause roaring sounds each time the heavy-duty truck is driven. A damaged exhaust may also have leaks, which cause the exhaust pipe to make thumping, clunking, or rattling sounds.

Unsavoury Smell

Is there a bad smell coming from your heavy-duty truck? This can be a result of a leak or exhaust damage preventing your exhaust from filtering exhaust fumes out. When such gasses are trapped, they create a stench that can penetrate your heavy-duty truck. As inhaling exhaust fumes may be very harmful and even lethal, this has to be handled straight away.

The environment also suffers greatly when these fumes are released into the atmosphere. Exhaust systems were developed in the first place to prevent pollutants that may damage the ozone layer.

You experience low fuel efficiency 

Have you noticed a drop in your fuel efficiency? This can be an indication that the exhaust is not providing enough back pressure. If so, you will need a new exhaust, which improves your gas economy by filtering the exhaust more effectively.

An effective exhaust system with a working exhaust will improve fuel efficiency. So, a defective exhaust may be to blame if you've been stopping at the fuel station more often or you're getting less mileage.


The damage you can't see is probably severe if your exhaust is seeping or showing symptoms of corrosion. Moisture condenses and sits in the pipes when the exhaust cools. Given enough time, the liquid will begin to erode your exhaust's pipes and seams, causing leaks and loud sounds. Get it checked out right away, particularly if there are many leaks originating from various locations.

Increased Engine Temp

Exhaust damage may result in obstructions that raise engine temperatures or reduce power. Allow your heavy-duty truck to idle for a few minutes. If you notice exceptionally high engine temperatures, you should take urgent action to fix the problem. This issue is often the result of a damaged or clogged after-treatment component. 

Exhaust system age 

Exhaust systems age and begin to degrade just like all other parts of your heavy-duty truck. In actuality, the majority of exhausts barely survive five to seven years. Road salt, speed bumps, and potholes are a few elements that might hasten the aging process. Significant corrosion or holes are indicators that your exhaust is growing older. It's a good idea to periodically check your exhaust to see how it's holding up physically. Surface rust of a small quantity is often OK, but if it has begun to corrode the metal below, it has to be replaced.

Final words 

Unresolved exhaust-related problems may significantly lower your heavy-duty truck's efficiency, cause serious engine troubles, and result in higher-than-expected heavy-duty truck repair costs. It's difficult to stick to a budget when expenses like those are unexpected.

Take your heavy-duty truck to a reputable technician that specializes in your kind of heavy-duty truck immediately if you discover any of the aforementioned issues with your heavy-duty truck or exhaust. Choosing a professional who is familiar with your heavy-duty truck's make and model is a smart move since you'll receive the most efficient and reasonably priced outcomes. 

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