Diesel Engine Repair: What Sets It Apart from Regular Repairs?

Obviously, you know that a diesel engine is different from a gasoline engine just by the type of fuel it uses. But there's more to it than just that. Diesel engines have a unique set of needs, and this also includes how they are repaired.

If you take a diesel vehicle to a specialist who only serves gas engines, you may leave with more problems than when you brought it in. That's why it's essential to be educated on what goes into diesel repair, and why finding a diesel engine repair specialist is so important. 
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What Are Diesel Engines?

Diesel engines are very different from gasoline engines. Diesel engines use compression ignition, while gasoline engines use spark plugs. Compression engines compress air until it's extremely high in pressure and temperature, then inject fuel into the combustion chamber.

If you’re not an expert, this may make your head spin. To summarize, diesel engines have these characteristics. 
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Key Characteristics That Make Diesel Engines 

Higher Compression Ratios

The compression ratio reflects how much air is compressed. Diesel engines can have a compression ratio between 14:1 and 25:1. In contrast, gasoline engines have a ratio of 8:1 to 12:1. More compression means greater efficiency and torque. Still, it adds more stress to the engine. 

Fuel Injection Systems

A gasoline engine is far less complex than a diesel engine, especially in the fuel injection system. The fuel injection system can exceed 30,000 psi, which is much more than the typical gas engine. For this reason, repairs can be much more complicated. 

Heavy-Duty Construction

A diesel engine is no slouch. It is built to last, with components that are much more durable than gasoline. Due to the much stress a diesel engine experiences compared to a gasoline engine, you need a heavy-duty engine.

These factors and more make diesel engine repair expensive.  
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Diesel Engine Repairs Are Pricey 

As if the diesel itself didn’t typically cost more than gas, the repairs are more expensive as well. Here’s why.
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Requires Specialized Parts

Because diesel engines are built to last and have unique operating conditions, their parts can cost a lot more than gasoline's. Injectors, turbochargers, pumps—these can all cost quite a bit. Often, a repair center may need to order these parts, too. 
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And Unique Tools

A diesel repair will need unique tools for diagnosis and repair. Many of these tools, such as high-pressure fuel lines, aren't found in your typical repair centers. The tools can be expensive, which can add to the bill.
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Needs Expertise

A diesel technician can be a lot rarer, especially in an area where diesel vehicles aren't as common. It also takes many years of experience and training compared to a standard mechanic. A unique skill means fewer workers, meaning they can negotiate higher costs since there aren’t other people in the area you can turn to. 
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More Labor

Finally, diesel engines require more hours. They are more complex, especially if the entire engine needs to be overhauled. Thus, expect to see a higher estimated repair. 
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That’s Why Maintenance is So Important

Maintenance is vital for any vehicle, but due to its high repair costs, you want to ensure that you practice regular maintenance with your diesel engine. Even if the issue seems minor, it can grow into something much more problematic if not repaired ASAP. If you feel something is off, your engine should be taken in for routine maintenance or inspection every so often.  
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Typical Diesel Engine Maintenance Includes

Oil Changes

Just like gasoline, diesel engines need regular oil changes to remove sludge and keep the engine running smoothly. Due to their operation, diesel engines often need higher-quality oil. 

Fuel Filter Replacements

Fuel filters can catch impurities in diesel fuel, but they won't be able to if they are clogged. Regular changing your filter will ensure that your vehicle is running as cleanly and efficiently as possible. 

Air Filter Replacement

You'll also want to check your air filter to ensure optimal engine airflow and ensure the engine operates as efficiently as possible. 

Cooling System Checks

Due to its high heat levels, you'll want to check its cooling system periodically. Failure to do so can lead to catastrophic failures. 

Exhaust System Inspection

Finally, you'll want to check your exhaust system, especially compared to your local emission regulations. Tracking components such as your Diesel Particulate Filter (DPF) will keep you on the right side of the law and let you breathe easier. 
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Diesel Engines and Environmental Impact

Diesel engines can produce high emissions. With many areas having green laws, newer engines have been equipped with more sophisticated emission control systems. 

For example, the DPF we just mentioned can catch soot and particulate matter from exhaust, keeping these contaminants from being released into the atmosphere. Meanwhile, Selective Catalytic Reduction (SCR) uses Diesel Exhaust Fluid (DEF) to reduce nitrogen oxide emissions. It does this via a urea-based solution, which converts these emissions into nitrogen and water vapor. 

If you have these engines, you'll be driving cleaner. However, you'll also have to deal with costlier repairs due to their complexity. Also, modern diesel engines may include other technologies. If you seek a repair and you have a diesel engine, it's important to find one who is up-to-date with technology. 

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When to Seek a Professional Repair 

Some people can tackle mild issues, like changing oil or replacing filters. But, unless you have experience with diesel engines, you should not do it yourself. It's not something you can learn from a YouTube tutorial. Your skills with your car aren't enough for a diesel engine. 

If you are noticing the following, call a pro immediately:

• You’re hearing unusual tapping or knocking noises. 
• You feel a decrease in power or acceleration. 
• You notice more exhaust smoke. 
• Warning lights appear on your dashboard. 
• Your fuel economy is poor. 

These aren't issues you can simply ride out. If not repaired, they can be costly and sometimes dangerous. 

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Call Us!

Whether you need diesel engine maintenance or repair, Brian Omps Auto Repair & Towing is right for the job. We have several skilled professionals are are experts on diesel engines, both old and new. 

Not only can they get your diesel vehicle back to tip-top shape, but our business also looks for ways to save you money. So, if you're experiencing a problem, big or small, or you need maintenance, contact us today!

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