5 Common Problems with Duramax Diesel Engines

Duramax diesel engine

5 Common Problems with Duramax Diesel Engines

5 Common Problems with Duramax Diesel Engines

5 Common Problems with Duramax Diesel Engines

Duramax diesel engines deliver exceptional power, remarkable durability, and exceptional reliability. Even so, every engine will have problems associated with it. And Duramax diesel engines are no different. At Branch Automotive in Littleton CO, we’ve just about seen it all, especially pertaining to engine repair!

The following core issues are among the most prevalent Duramax diesel engine problems. Let’s take a closer look at some of the most common problems with Duramax diesel engines in Littleton CO. For immediate assistance, contact Branch Automotive in Littleton CO. 

 Fuel System Repair in Littleton CO

One of the most common problems associated with Duramax diesel engines is fuel system issues. The earliest warning indicator of fuel system problems is sluggish or stalled starts. Other signs your truck needs fuel system repair in Littleton CO include:

  • Reduced engine power
  • Reduced fuel economy
  • Excessive smoke
  • Lower RPMs
  • Excessive noise
  • Problem with lower gear selection

If you notice any of these signs, make sure to reach out to Branch Automotive in Littleton CO. 

Failing Glow Plugs in Littleton CO 

Glow plugs are integral components on Duramax diesel engines. These heating elements are tasked with warming air and fuel to bolster the combustion efficiency of your truck. Whenever your glow plugs begin to fail, you may notice:

  • Hard starting
  • Rough idling
  • Engine misfiring
  • A drop in fuel efficiency

At the same time, if your exhaust smoke is black or white instead of gray and thin, you could have a problem with your glow plug. While the 2006 models are notorious for this issue, not all Duramax 6.6L trucks have glow plug problems. 

Malfunctioning Fuel Injectors in Littleton CO

Your Duramax’s fuel injectors ensure fuel makes its way into the combustion chamber. To do so, your fuel injectors pressurize the fuel. If the fuel injectors malfunction, it can cause performance issues. For starters, you may be unable to start your vehicle. Even if you get it started, you may have to crank it several times before it starts. Other signs include misfiring, uneven idling speeds, and reduced fuel efficiency. And if you can smell fuel inside your truck’s cabin, you may have a leak in your fuel injectors.

A Failing Water Pump Can Cause Overheating

Some Duramax diesel engines are known for overheating due to a bad water pump. While many diesel trucks require water pump replacement at around 100,000 miles, Duramax trucks may need it at 80,000 miles. Simply put, when the water pump malfunctions, your engine will not receive enough coolant to prevent overheating. If your engine is overheating, it can cause a number of more expensive problems, such as: 

  • Cracked engine block
  • Damaged pistons
  • Damaged cylinders
  • Blown head gaskets

Understanding that Duramax diesel engines are prone to water pump problems, make sure you stay on alert for the following signs of a failing water pump:

  • Leaks of coolant
  • Overheating 
  • Whining sounds from the front of your engine
  • Signs of corrosion on the water pump

A Bad Fan Clutch Can Cause Overheating

It’s not just a faulty water pump that can cause your Duramax to overheat — a bad fan clutch can too. The fan clutch helps ensure proper airflow makes its way through the radiator. It operates like a fluid coupler and utilizes the water pump to power your fan blade. When the fan clutch begins to fail, the radiator may no longer cool properly. Unfortunately, this is one of the most common problems with Duramax diesel for 2005 and earlier models. 

Contact Branch Automotive in Littleton CO for Diesel Engine Service & Repair 

As your local diesel engine expert, Branch Automotive in Littleton CO boasts the training, technology, and expertise to keep your Duramax forming at peak levels. We offer virtually every service Duramax diesel engines will ever need. In addition to Duramax diesel engines, we also specialize in Cummins diesel engines, Powerstroke diesel engines, and more. No matter what you drive, the experts at Branch Automotive will help you find the best solution at an unmistakable value. 

Don’t wait for your Duramax diesel engine to show signs of distress. Schedule engine service and proactive maintenance in Littleton CO today!

Contact Branch Automotive today! Call us at (303)771-2224, stop by to see us at 6030 E County Line Road in Littleton CO, or complete our online contact form to request an appointment