Gas-powered trucks cannot compare to diesel for strength and durability. Even so, diesel powered vehicles are not invincible to failing components. When you need diesel engine repair, trust Havoline® Xpress Lube of Kernersville.

Some Common Problems With Diesel Fueled Engines

Typically, the average lifespan of a diesel engine is 500,000 miles. However, with proper maintenance, some vehicles can last to 800,000. Yet, their durability doesn’t make them immune from requiring a trip to a nearby diesel repair shop. Typically, these are the most common diesel engine repair issues:

1. Black Smoke

Combustion engines require a specific fuel-to-air ratio to completely burn the fuel. Any time this ratio is off, a portion of unburnt fuel will leave the engine. When this occurs in a diesel, the exhaust smoke appears black. A few different failing parts can cause an unbalanced fuel-to-air mix:

• Clogged air filter
• Faulty injectors
• Dirty EGR valve (Exhaust gas recirculation)
• Failing MAF (Mass air flow sensor)

2. Overheating

Diesel engines can overheat for many of the same reasons as gas-powered vehicles. When your engine is running hot, one of the following reasons may be the cause:

• Low coolant levels
• Faulty thermostat
• Failing radiator
• Damaged water pump
• Inadequate lubrication
• Overburdening the engine

3. Oil Oxidation

Oxidation is a chemical process where oxygen in the air causes a chemical change in a substance. When oil becomes oxidized, it thickens and forms sludge. Oxidation happens with all motor oils including gas-powered vehicles. However, diesel engines are more susceptible to oxidation due to the amount of soot they produce.

Additionally, diesel powered vehicles use EGR (exhaust gas recirculation) valves and turbochargers. Both of these components recirculate soot-containing exhaust back into the engine. Typically, soot will enter engine oil by passing through the piston rings.

4. Difficulty Starting

Several different faulty parts can result in a hard start. Although some are also common in gasoline engines, others are unique to diesels:

• Clogged air filter
• Compression leaks
• Fuel system issues
• Glow plug failure
• Failing battery
• Faulty starter

5. Fuel Contamination

Crude oil undergoes a refining process that separates it into different petroleum products with distinct characteristics. For example, gasoline consists of short-chain hydrocarbons making it lightweight and volatile. Comparatively, diesel has long-chain hydrocarbons giving it a heavier and less volatile nature.

In recent years, environmental concerns have led refineries to remove greater amounts of sulfur from diesel. Low sulfur fuel combined with the water-absorbing properties of diesel has led to greater contamination. Of course, using contaminated fuel can clog fuel filters and injectors.  However, failing to drain the water trap in your engine can also lead to contaminated fuel.

Diesel Engine Repair FAQs

Are you having issues with your diesel truck? Call Xpress Lube at 336-904-6319 with your questions and a friendly staff member will help you. Below we answer a few commonly asked questions about diesel powered vehicles.

Are Diesel Engines Expensive To Repair?

Although diesel powered vehicles typically require fewer repairs than gasoline, they do tend to be more expensive. This is because diesel fueled engines have specialized parts and intricate systems. Also, the parts are more expensive than gas engines due to their heavy-duty construction.

However, diesel engine components generally last longer due to their robust structure. Thus, a diesel vehicle offers overall lower repair costs over the life of the automobile.

When you bring your car to Xpress Lube, we’ll diagnose your problem. Before we begin any work, we’ll give you an estimate of the cost and the time frame to complete repairs.

How Often Should I Service My Diesel Vehicle?

Keeping up with maintenance is crucial for the longevity of your diesel truck. Additionally, routinely checking your oil, air filter, and coolant can help prevent breakdowns. Many experts also recommend having a technician look over your engine at least once a year.

Why Is Idling Bad For My Diesel Truck?

Excessive idling in any combustion engine pollutes the air, wastes fuel, and causes greater engine wear. However, the effects can be more harmful in diesel engines due to the injection and ignition processes.

When an engine idles, incomplete combustion occurs, generating greater amounts of soot. Moreover, one of the most prominent components of soot is carbon. While particles may be small, they like to clump together and stick to parts. Then, the heat from the engine will bake on these deposits. Eventually, components like the EGR valve and fuel injectors can become clogged.

Also, idling for long periods can clog the diesel particulate filter (DPF). This part removes soot from the exhaust to prevent pollution. During normal operation, engine heat will regenerate or burn off the trapped soot particles. Excessive idling produces greater amounts of soot without reaching the minimum temperature necessary for regeneration.

Can Any Nearby Auto Repair Shop Work On My Diesel Truck?

Unfortunately, no. To accurately diagnose and repair diesel engines the technician needs specialized knowledge. Furthermore, ASE certification is the best way to access a mechanic’s knowledge.

Xpress Lube, is a nearby full-service auto repair shop with 4 ASE-certified mechanics. For over 25 years, we’ve been helping car owners maintain their automobiles. Our team can repair all foreign and domestic cars, SUVs, vans, trucks, gas or diesel vehicles.

Moreover, our modern repair facility has the latest diagnostic equipment to find the troublesome components. Plus, you’ll love our fast and friendly service at competitive prices. We even have an onsite modern car wash to keep your vehicle’s exterior looking great.

So, when you need a diesel engine repair, call Havoline® Xpress Lube of Kernersville at 336-904-6319.