Cummins is and always has been a big player when it comes to diesel engines. After all, it has made trucks like the Dodge Ram into the legends they are today. But sadly, nothing lasts forever. If your Cummins engine hasn’t got the same “pep” as it once had, chances are that its fuel injectors may be to blame.
Like with any other engine problem, fuel injector issues should be taken care of sooner than later. Neglecting the issues will only cause more trouble later on. But how do you know if your Cummins ISB/ISC injectors are to blame?
DFI has put together a list of the most common issues associated with failing diesel fuel injectors. Knowing that a part is failing is one thing, but knowing why it has failed in the first place is just as important. As a bonus, we have included a list of common causes of fuel injector failure.
Check out this video from Highway & Heavy Parts about Cummins ISB/ISC Fuel Injector Failure:
Do you have additional questions about fuel injectors? Give us a call at (855) 212-3063 today. We would be more than happy to help!
The signs of failing or defective fuel injectors are pretty much the same regardless if it is a Cummins engine or not. They can include, but are not limited to:
While it is normal for older diesel engines to put out black smoke, especially under load, excessive amounts should not be ignored. It is often a sign of more serious issues engine issues such as worn-out injectors.
Power loss is usually a sign that an engine is not performing to the level that it left the factory. One common reason for this could be attributed to “tired” or worn-out fuel injectors.
Does your Cummins diesel engine have a hard time maintaining an even RPM at idle or feel “lumpy” when at a stoplight? Plugged or defective fuel injectors could be to blame.
Worn-out injector O-rings can allow for fuel to make its way into the engine oil. This does not only dilute the oil, but can also increase oil pressure causing further long-term damage.
Does starting your truck seem to take longer than usual? Even worse, does it not start at all? It could be down to faulty fuel injectors in your Cummins ISC/ISB diesel engine. Something as simple as a full or partially plugged fuel injector tip could be the only thing standing between you and a great running diesel engine.
The symptoms mentioned could also be caused by other, sometimes more serious issues. The best thing is to get an experienced mechanic or shop to determine the initial cause of the problem. Although fuel injector problems can be apparent, in some rare cases the symptoms could be caused by other reasons. Something as simple as having moisture in your fuel tank can cause havoc on your fuel delivery system. Resolve potential fuel injector problems as soon as possible to avoid costly repair bills.
Do you think your fuel is contaminated? Have a look at this post from Highway & Heavy Parts. Remember, what may seem like a small problem now could spell disaster later down the road. Get your fuel injectors replaced with freshly rebuilt or remanufactured available at DFI.
Replacing a damaged part is one thing, but knowing why the problem happened in the first place can help the issue from happening again. We have created a list of the most common reasons as to why a diesel fuel injector would fail.
Not all diesel fuel is made the same. The “off-brand” or gas station will often sell bad-quality fuel at a lower price. While it may be fine to get fuel from a no-name gas station, studies have shown that constantly filling up with low-grade diesel fuel can cause permanent damage to components such as the fuel injectors in your Cummins ISC/ISB engine.
Much like any internal combustion engine, poor operating conditions will have a big impact on how long it lasts. Factors such as excessive idling, not giving the engine a chance to properly warm up, and short runs will all play a part in how long fuel injectors last. On top of damaging fuel injectors, poor operating conditions can negatively impact the turbo, exhaust system, and the combustion chamber.
Diesel engines are made to run within certain parameters. High temperatures and increased pressures all play a major role in how long certain components such as the fuel injectors will last. Running an engine too hot, whatever may be the cause, will inherently help speed up the aging process of certain components such as the fuel injectors.
Interested in what causes fuel injector failure? Here is a post on why common rail fuel injectors fail. Remember, these are the most common, but not the only ones.
There isn’t much that you, as a customer can do about failed or damaged fuel injectors. It doesn’t matter if you have the legendary 5.9L ISB or the robust 8.3L ISC Cummins engine. When it’s time to replace them, we are here to help.
DFI has remanufactured and rebuilt injectors for your current diesel engine. From Cummins to Cat, Detroit, and other notable names, we have you covered.
All injectors sold at DFI are tested to meet or exceed OEM specifications. Essentially, you get an injector that is as good, if not better than OE at a fraction of the cost. Little details such as these have helped make us one of the best companies when it comes to diesel engine parts and service.
Do you have any other questions regarding your Cummins ISC/ISC fuel injectors? Our-ASE certified staff is here to help get you back on the road as soon as possible with minimal downtime. Gives us a call at (855) 212-3063.
