Quick Answer

Question: How much does it cost to replace 5.9 Cummins injectors?

How much does it cost to replace a fuel injector? Replacing fuel injectors in your Dodge Cummins 5.9L can range from $2600-$3200 CAD, depending on what other work is done at the same time.

How long do 12v Cummins injectors last?

A well maintained fuel system can keep injectors going for 250,000 miles or more. The original common rail diesel injectors and CP3 pump in my 2005 Ram have been trouble free for 180,000 miles now. These injectors have delivered good performance and fuel efficiency.

How do you remove injectors on a 5.9 Cummins?

Dodge Cummins 5.9 Injector Removal Quick Tip and Specs

Should you replace all diesel injectors at once?

Often, one little problem in your diesel engine may be indicative of other system failures. This is why it is often best to replace multiple injectors at once.

How do I know if my 5.9 Cummins has bad injectors?

How can you tell when a 5.9 Cummins injector pump replacement is imminent? Some symptoms of 5.9 Cummins injector pump problems include lack of power, not starting, or hard starting. Bad injectors can also cause a knock in the engine.

How do I know if my injector is bad on my 5.9 Cummins?

Symptoms of Failing Dodge Cummins Fuel Injectors

  1. Excessive Smoke.
  2. Power Loss.
  3. Rough Idle.
  4. Fuel in Oil.
  5. High Return Fuel.
  6. No Start.

How long do 12v injectors last?

Some can be expected to last between 80,000 and 100,000 miles, while the best fuel injectors can last as long as you have your vehicle. You can expect your fuel injectors to last longer with a little care and attention.

Does Cummins have heui injectors?

Common mechanical injectors include the older Cummins series as well as the Navistar. Hydraulic Electronic Unit Injectors (HEUI): This computer-controlled system consists of a combined pump and injector for each engine cylinder. It uses high amounts of pressure to fire precise strokes of fuel to the engine.

Does Cummins use heui injectors?

Phasing Out the HEUI Injector

Some of the first diesel engines to use the common rail include the Duramax LB7 in 2001, followed by the 5.9L Cummins in 2003.

How do you remove a 12 valve injector?

12 Valve Cummins Injector Removal (NO SPECIAL TOOLS)

How much does it cost to replace diesel injectors?

On average, you can expect to pay between $350 and $850 to replace your fuel injectors. The range of costs depends on a number of factors. Smaller vehicles with fewer cylinders requiring less expensive parts will come in at the lower end of the spectrum.

How do you replace Cummins injectors?

How To Replace Cummins Common Rail Fuel Injectors

Is it OK to just replace 1 fuel injector?

Yes, you can replace just one of the fuel injectors in your vehicle. If you are facing a problem with an injector, you can swap it for a good cylinder.

Will a bad fuel injector throw a code?

Diagnosing a Clogged Fuel Injector

One of the obvious symptoms of a clogged fuel injector is the lighting up of the “Check Engine” light in your dashboard. The fault codes usually associated with a clogged fuel injector can range from misfire codes to lean codes.

What happens when one injector fails?

What Happens When One Injector Fails? Fuel injector failure can cause a rough engine idle if it fails to deliver a steady stream of fuel to the engine. A faulty fuel injector may inject too much or too little fuel into the cylinders of an engine. In either case, the engine can idle rough.

What are the symptoms of a bad diesel fuel injector?


  • Trouble starting the vehicle or uneven idling. The engine cranks but doesn’t start unless you crank it for a long time.
  • Misfire.
  • Smell of fuel.
  • Dirty emissions.
  • Increased fuel consumption and poor miles per gallon.

Is it bad to idle a 5.9 Cummins?

The intake manifold heater may ignite the ether in the manifold and cause an explosion. Idling for longer than 15 minutes should be avoided. Do not operate at full speed or load until the coolant reaches normal operating range. Do not operate above low idle until oil pressure is indicated.

Is it bad to run a diesel with a bad injector?

Left too long, a faulty fuel injector can cause serious engine damage that requires major repair. Avoid the cost and hassle by using Rislone Gasoline Fuel System Treatment or Diesel Fuel System Treatment every 3,000 to 5,000 miles, depending on the type of driving you do.

How long do injectors last on 5.9 Cummins?

Premium Member. I’d say the average is around 135,000miles. The high side is usually around 230,000.

What happens if a diesel injector fails?

What Happens If A Diesel Injector Fails? Diesel fuel injectors wear out and fail to close completely over time. As a result, the fuel rail is reduced in pressure, resulting in a leak-down. The result can be a difficult-to-start condition or a smokey exhaust as well as a difficult-to-start condition.

Can you replace one diesel injector?

When one headlight goes out, it’s only a matter of time before the other goes out. Here are some reasons why you might consider changing out multiple injectors rather than just the one: Same amount of work: In most cases, it isn’t that much more work to replace one or replace a full set of diesel injectors.

What is VP on a diesel engine?

VP diesel Pump

Can you tune a 2019 Cummins?

Our tuning for the 2019 Dodge Cummins will be available on two of our favorite diesel tuning platforms: EZ Lynk and EFI live. For the do it yourself guy, EZ Lynk is certainly the route to go. EZ Lynk has developed a bypass cable that is very, very simple to install into the truck.

How do I know if my CP3 pump is bad?

There may be a surge at idle due to low or no fuel supply pump pressure to the high-pressure pump. Knocking can be heard if the actual versus desired are too far apart which may be a bad FCA or Fuel Control Actuator.

How long do heui injectors last?

HEUI Injectors Last

As a general rule of thumb, a 7.3L injector will last 200,000 miles without skipping a beat, although we’ve seen them go 250,000 to 350,000 before an overhaul was typically necessary. Even though the 6.0L is notorious for injector problems, a properly maintained set can last at least 150,000 miles.

What does heui pump stand for?

The HEUI stands for Hydraulic actuated electronically controlled unit injection. As the name sounds, the HEUI is a unit injection system that uses hydraulics for building fuel pressure. But while the hydraulics is electronically operated, it is powered by high oil pressure.

What does a heui pump do?

The high-pressure oil on top of the intensifier piston forces the plunger (D) down, which in turn forces the nozzle needle to lift, pressurizing the fuel in the plunger cavity, and ultimately opening the nozzle (E), sending fuel into the combustion chamber.

What is the difference between direct injection and indirect injection?

The difference between DI and IDI is the layout of the injection systems. The IDI system has a small swirl chamber above the cylinder, where the fuel is injected, there’s also a glow plug in the chamber needed to help start the engine.

Who invented the HEUI injector?

Detroit Diesel Corporation’s electronically-controlled unit injector systems developed in the 1980s in cooperation with GM’s Rochester Products Division. Caterpillar’s hydraulically-actuated electronically-controlled unit injector system (HEUI). Cummins’ HPI injection system developed in cooperation with Scania.

What is the full form of heui?

This Hydraulic Electronic Unit Injector, (HEUI), requires no mechanical actuating or mechanical control devices, and offers many advantages over conventional fuel injection systems.