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Reman Fuel Pump Technician

Why You Should Have a Certified Diesel Fuel Injection Shop Rebuild Your Fuel Pump

So, your fuel pump fails. What can you do?

You have a few options to help fix the problem, and a popular one is having your fuel pump rebuilt. This can help save you money, and, if done correctly, extends the life of your pump without having to buy a new one.

However, not all shops put the same care into their rebuilds, and you could end up with a whole host of new problems. Or, maybe you want to save money by trying to rebuild your fuel pump yourself. There are a lot of things that could go wrong with this, and if you don’t do everything correctly, you could end up costing yourself even more money than paying a shop to rebuild it in the first place.

So, if you’re wanting to rebuild your fuel pump, we recommend having a certified diesel fuel injection remanufacturing shop handle it for you. Not convinced? We’re taking you through the reasons it’ll benefit you to have an expert take care of the rebuild.

Be Careful Which Shop Rebuilds Your Fuel Pump

For a lot of people, price is the number one consideration when it to comes repairing or replacing parts. But that doesn’t mean you’ll be getting a quality part in the end.

There are shops out there that will tell you they’re handling the testing to ensure everything works properly, but they’re really just sending it out. The pump might start up okay when you get it back in your engine, but you’ll run into problems later.

In other cases, the shops will just reuse a lot of the same internal components. In some cases, this is fine, but if there are updates to the pump’s components, you should try to use them. That way you’re getting as close to a new pump as possible.

So, why take your pump to a certified shop to have it rebuilt as opposed to any other shop? It mainly comes down to quality control. You never really know what you’re going to get from one of those other shops. We frequently have customers come in from having their pump rebuilt at another shop and they’re already having problems with it. So, they’re paying even more to have it fixed again then they would have if it had been done correctly in the first place.

Why it Might Not Be the Best Idea to Rebuild Your Fuel Pump Yourself

Some people think that it’ll be easier and cheaper to just rebuild their own pump. They try to put a new gasket kit on it, and call it a day. Oftentimes, though, this doesn’t even begin to address the real problem.

We see it a lot. People take their pump apart to put a new gasket set on and the job overwhelms them.

First, despite what a lot of people think, the gaskets aren’t usually what’s wrong with your fuel pump. More often than not, it’s the metal components. A gasket kit won’t repair your pump if this is the case.

There are a lot of things that could go wrong when people try to fix their own fuel pump. If they don’t know what they’re doing, they could seize the pump, and that would end up costing a lot more in repairs. Or, they could flood the pump. It would cause detrimental damage if the tolerance isn’t correct.

People end up costing themselves a lot more money when they try to fix a pump themselves. They think that they can get it done for $200-300, but then they mess something up. Then they have to repurchase all the parts, plus anything that was ruined. In the end, it’s usually cheaper to just have it done correctly by a trusted, certified shop than trying to rebuild your pump yourself.

Here at DFI, we take pride in our rebuilds! Let us help you get your pump running like new again.

Do you need to rebuild your diesel engine fuel pump? Our Bosch Certified Diesel Technicians can help get the job done right! Give us a call at (855) 212-3022.

Are Remanufactured Diesel Fuel Pumps as good as new OEM Pumps?

If you’re having problems with your diesel engine fuel pump, you’re probably looking to replace it. But with so many options out there, how do you know where to start?

You could buy a new one from the OEM, but that ends up costing more. But can you trust that a remanufactured pump will give you the same quality and reliability as a new one?

It’s a valid concern, as there are shops out there who don’t put much care into their remans, and don’t build them to OEM specifications. You don’t want to end up spending money on a pump that just breaks down right away.

Here at DFI, we take pride in our remanufactured pumps, and provide our customers with only the best quality. Today, we’re taking you through just what it means to have a part remanned and why it might be a good option for your diesel engine.

What’s the Difference Between Remanufactured, Rebuilt, and Refurbished

When you’re looking to replace or repair parts in your diesel engine, you’ll probably notice three terms thrown around a lot: refurbished, rebuilt, and remanufactured. Often, these are treated to mean the same thing, when in reality they actually refer to different things.

Refurbished, for example, refers to a product that has only had a failed component replaced and is then sold again. This is more often seen in the electronics field.

A rebuilt part will have been taken apart and had any worn or out-of-date parts replaced. The product is then put back together and tested.

Remanufactured parts, which is what we’re focusing on today, will have all the components replaced on it, and they’ll all be to the new or updated specification.

There’s a wide variation in what people consider a remanufactured part, which is why it’s important to go through a reputable shop or supplier. Here at DFI, we make sure you get the best possible reman fuel pump.

Advantages of a Remanufactured Part


HP Fuel Pump Test Bench Gauges

When you’re considering between a remanufactured pump and a new OEM pump, it’s important to know that our reman pumps are OEM pumps. We rebuild them to the latest possible specifications, where some aftermarket suppliers do not.

A remanufactured pump should be as good as a new OEM pump, and it should have the same warranties. When we reman a pump, it gets all the latest and greatest updates. When these pumps pass on a test stand, the specification is up to the new standard.

Each pump is put through rigorous testing. Some of the testing is automated through Bosch, and some of it is done manually. When a pump passes, you can be sure that it can handle everything you’re engine throws at it.

One of the biggest advantages of a remanufactured pump is the price. You’re getting the same pump, with equal or better specifications than the new OEM pumps, for a much lower price. And your remanufactured pump should last you just as long, if not longer than a new pump.

You also have the option, with a remanufactured pump, of controlling the price a liitle bit, as well as customizing your pump. If you want specific components put in, you can have them put in. If you don’t want them, you don’t have to have them, and it can save you a little money.

If you’re thinking about a remanned fuel pump, give us a call here at DFI. We can help you make the right choice for your engine!

Thinking about a remanufactured fuel pump for your diesel engine? Our Bosch Certified Diesel Technicians can help! Give us a call at (855) 212-3022.

What are the Symptoms of a Failing Fuel Pump?

As we all know, a properly functioning fuel pump is vital to the health of your diesel engine overall. But, like any other component in your engine, you might have a failure. So, how do you know when it’s your fuel pump that’s giving you trouble? What symptoms should you look out for? 

Today, we’re taking you through the different types of fuel pumps and what issues you might have if you’re experiencing a failure. Read on to learn more!

Failures in a Rotary Pump


rotary pump

A rotary pump describes a pump where the output lines are positioned in a circle. It has a distributor on, which is turned by the drive shaft. There are different versions of rotary pumps, some electronic and some not.

So what should you keep an eye out for? The following symptoms could indicate a failing rotary pump:

  • Hard start or hot head
  • No throttle control or elevated RPM ring (This is more for a Stanadyne or Roosa Master, covering a certain style through those companies.)
  • Seized head or plugged nozzle
  • Fuel in the oil
  • Oil in the fuel
  • Carbon in the fuel
  • External fuel leaks
  • With a no start on an electronic pump, there could be a problem with the electronic shutoff solenoid
  • Throttle alarm or shutoff arm leaking
  • Leaking head
  • Leaking advance
  • Wear from ultra low sulfur (Since there’s no lubrication in the fuel, you get metal parts that just wear on each other constantly

Failures in an Inline Pump



As you can probably guess, all the lines in an inline pump are positioned in a straight line. Each cylinder is operated on its own, so they can fail separately. Symptoms of a failing inline pump can include:

  • Fuel in the oil
  • White smoke from a timing issue or air
  • Black smoke from timing problems, a lack of air, or excessive fueling
  • Blue smoke from unburnt fuel
  • Low power caused by governor issues, lack of fuel, or a bad transfer pump
  • No start because of a sticky rack, bad barrel plungers, or, if it’s electronic, the shutoff solenoid might not work well
  • No RPM control because the rack is sticking or the governor is shutting off early
  • Cylinder not pumping fuel caused by a delivery valve holder that got over-torqued
  • Wear from ultra low sulfur

Failures in a High-Pressure Common Rail Pump


high pressure common rail pump

A high-pressure common rail pump is similar to a HEUI pump in that it has pistons that revolve, and it has one inlet and one or two outlets. The outlets lead to a rail that supplies the pressure. Where an inline or rotary pump applies a specific amount of pressure, the common rail handles the pressure and the ECU handles the fuel distribution.

If you’re having a failure in your high-pressure common rail pump you might notice some of the following symptoms:

  • They might quit entirely. This might occur if you leave them sit for a long period of time. Normally, in this situation, it would be the suction side that fails. A lot of them have a supply pump built in that sucks fuel from the tank and that’s the part that can go bad
  • They can get wear from ultra low sulfur
  • The pressure regulator fails. You might notice a hiccup in the engine as the pressure bounces too  much (400 or more psi where it would typically only bounce about 200 psi)
  • It goes into limp mode when when the engine is under load, which can be caused by a fuel restriction or weak pump
  • No start issue caused by an injector staying open. While it might appear so, this isn’t actually an issue caused by the pump

Failures in a HEUI Pump


HEUI pump

A HEUI pump is actually quite similar to a high-pressure common rail pump, although it’s an oil pressure pump. Its pressure isn’t as high, though. It only goes to a few thousand pounds.

So, if you have a HEUI pump in your engine, what should you watch out for? Some symptoms of a failing HEUI pump include:

  • No start, which can be caused by low oil pressure from an injector sticking open, or by an oil leak beyond the pump. If it doesn’t make the necessary pounds of pressure, it won’t start
  • The IPVR can fail because of a loose nut. This can cause a stall. Or, the nut can slide back and forth every time the brakes are hit, and it can fail
  • You can get foam in the oil caused by the wrong kind of oil. If this happens, it pressurizes differently and can lead to issues
  • Low fuel pressure can occur if proper oil change intervals aren’t followed
  • High pressure oil leaks (check your oil manifolds)
  • They can get wear from ultra low sulfur

Like with any issue in you diesel engine, proper diagnosis is key to fixing your problem. If you believe that you’re having an issue with your pump, DFI can help! 

Need help diagnosing your diesel engine problems? Our Bosch Certified Diesel Technicians can help! Give us a call at (855) 212-3022.