Dodge Cummins Diesel Fuel Injectors: Signs of Failure

Are you experiencing failure in your Dodge Cummins diesel engine fuel injectors? If so, you're probably left wondering what might have caused the problem, and if anything could be done to help prevent it in the future.

Fortunately, there are some things you can do to help prevent your injectors from failing. That's what makes proper diagnosis of the issue so important. If you know what caused your injector to fail in the first place, you can work to keep the same thing from happening to the new injectors.

We've put together a list of symptoms of Dodge Cummins fuel injector failures, as well as some common causes of failure to help you keep your engine running!

Check out our video for more information on the problems that can occur with your Dodge Cummins diesel fuel injectors:



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Symptoms of Failing Dodge Cummins Fuel Injectors


dodge cummins sign of failure | Highway & Heavy Parts


Think you're experiencing issues with your Dodge Cummins diesel engine fuel injectors? These symptoms could point to this problem:

  • Excessive Smoke
  • Power Loss
  • Rough Idle
  • Fuel in Oil
  • High Return Fuel
  • No Start

Excessive smoke and idling problems can indicate different issues in your engine, but one of the main things that could be going wrong is poor fuel filtration. This can be due to ball seat erosion, leading the injector to not seal properly. Since a correct seal is necessary for proper injector function, this damage means your injectors won't be functioning as they should.

Do any of these symptoms sound familiar? It might be time for some replacement fuel injectors for your Dodge Cummins engine. Check out our post on choosing the best common rail injectors for your diesel engine. 


What's Causing Your Dodge Cummins Fuel Injectors to Fail?

But what can you do to help keep your injectors operating like they should?

By knowing the some of the common causes of failure, you can work to prevent damage to your injectors. These causes include:

  • Quality of Diesel Fuel: The fuel you put into your engine can have a huge impact on its performance. Poor quality or contaminated fuel can lead to poor performing injectors. To avoid using contaminated fuel, try to fill up at places that move large amounts of fuel. This might mean passing by a cheaper option, but if the fuel has sat for a long period of time, it might be contaminated. 
  • Operating Conditions: Operating conditions also impact how your injectors will perform and can lead to failure. Some conditions that can cause problems for your injectors include: short runs, excessive idling, cool operating, and light engine loadings. These can lead to deposit problems in your combustion chamber, exhaust spaces, turbocharger, and DPF filter.
  • High Pressure/High Temperature: High pressure and high temperatures can cause fuel degradation. Similarly, they can cause deposits in pumps and injectors, lowering the lubricating ability of your fuel.

Want to know more about fuel injector failure? Read our article, Diesel Engine Common Rail Fuel Injectors: Potential Failures & Causes.


What Can You Do About Failed Injectors?


dodge cummins 6.7 l injectors | Highway & Heavy Parts


If the injectors have failed in your Dodge Cummins diesel engine, you can restore your fuel system with injectors from Highway & Heavy Parts!

We have injector options for your Dodge Cummins 6.7L diesel engine.

We all know what poor quality parts can do to an engine. You don't have to worry about that with these injectors! Crafted to strict OEM specifications, they are the very definition of quality!

These injectors are equal or better quality than those you would get from the OE, giving you the long-lasting strength and durability you're looking for. And they're backed by a 1-year parts warranty. 

Don't let failed injectors keep you off the road! Let Highway & Heavy Parts help you get back up and running.


Looking for replacement parts for your diesel engine? Our ASE Certified Technicians can help you get the right parts for the job! Call us at 844-304-7688, or request a quote online!