Heavy duty & off-highway Diesel Fuel Injection

Since the introduction of legislation in the early 1990s, the industry has seen a significant reduction in emissions levels. In fact, it would take 15 heavy duty vehicles today to produce the same level of particulate emissions as just one vehicle did 20 years ago. At Delphi, we’ve been at the forefront of these improvements, delivering cleaner, greener and more fuel efficient commercial vehicles. We also provide the parts, tools and know-how to service these vehicles, right the first time, every time. Keeping them driving as good as new for life.

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Rich OE legacy

Our heritage dates back to the legendary CAV brand, and the introduction of in-line and the iconic DPA pump – the best-selling rotary pump worldwide. Both were revolutionary for their time, setting new standards for reliability and power, and we’ve continued to push the boundaries ever since.

Three choices for fleets

By providing three choices – new, reman and repair – we can provide fleet managers with convenient service and maintenance at a very competitive cost.

Latest generation OE technology

Our latest generation F3 system takes engines beyond the 2021 global emissions and fuel economy regulations and through the next decade. Based on our proven Euro VI Common Rail technology and capable of 3,000 bar injection pressure, it delivers a substantial improvement in emissions, fuel economy and refinement for the lifetime of the engine.

OE-approved repair

In addition to new and remanufactured units, we also offer authorised repair through our global network of Delphi Diesel Centres. Replacing all wearable and performance critical parts, with like-for-like OE, and using OE-approved test plans and equipment, it offers a quality but economical solution.

Find your local diesel specialist here.

Reman

For an equally fast, yet more cost-effective turnaround we offer a range of remanufactured parts. Available off-the-shelf, typically within one to two years of vehicle launch, they are built using OE parts, equipment and processes, and are calibrated to exacting OE specifications.

OE expertise in the aftermarket

Of course, we’re committed to supporting these technologies in the aftermarket. We offer a range of new OE components, identical to those originally fitted, including our pioneering Electronic Unit Injector, Electronic Unit Pump, Smart injector and Multec® Common Rail.

Commercial vehicle diagnostics and test

Our dedicated diagnostic solution for trucks, buses and trailers, supports the key commercial vehicle manufacturers and systems, including the ability to carry out dosing tests, Adblue freeze monitoring calibration, system drain down and regeneration of the SCR system. We also offer a range of OE-approved test equipment for quick and accurate test and repair of the latest heavy duty applications.

Training from the OE experts

Designed to help you prepare for the very latest heavy duty diesel fuel injection technologies, our extensive training programme covers the repair of key systems, including Electronic Unit Injector and Pump and Smart injectors. Learn more about our training.

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The Delphi Difference

100 years of OE experience, supplier to the world’s top automakers
OE heritage and knowledge built into every aftermarket part
Comprehensive portfolio for a wide range of vehicles and model years
Streamlined SKUs for easy inventory management
Support through tools, tips and training

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2 min read

Fuel pump strainer replacement guide

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Diesel Fuel Systems Gasoline Fuel Systems Need to Know Distributors DIYers Drivers Shop Owners Technicians 2 min read

Resource Highlights

When replacing a fuel pump in a vehicle, it’s also important to replace the strainer because it can affect the pump’s performance. It’s also essential to replace the strainer correctly – if it’s not installed right, then it can cause the pump to prematurely fail. This guide takes you through the whole replacement process, step by step.

The role of the pump strainer

The pump strainer is a filter of fine mesh that sits over the fuel pick-up tube. Essentially, it keeps out anything that could contaminate the fuel system, such as dirt, sediment, fuel deposits, rust particles, sand, etc.

Without this filtration, the fuel pump can easily get damaged. With sediment clogging the system, the fuel pump would have to work much harder. Additionally, the fuel can get contaminated and dirty, which can cause further faults to occur in the fuel injectors.

Signs and symptoms of a bad fuel strainer

If the vehicle’s fuel strainer is damaged, the vehicle may display the following signs. It’s worth noting that many of these symptoms can point to other fuel system faults, such as an issue with fuel injection. In a nutshell, they all point to the vehicle not getting the correct amount or mixture of fuel.

Reduced engine power
Difficulty starting the engine
Engine stalling after running for a while
Loud noises from the fuel pump area
ECU check engine light

Fuel pump strainer replacement guide

Follow along with these steps to replace the fuel pump strainer correctly.

Tools and materials needed

For this procedure you’ll need:

New strainer
Socket wrench
Fuel line removal tool – not essential, but comes in handy
Safety glasses and gloves
Cleaning cloth

Find all the components and equipment you need here

Safety precautions

Replacing a fuel pump strainer is straightforward in some vehicles, but others require the tank to be dropped, which can be more complicated. Either way, when working with fuel and flammable materials, it’s important to follow safety procedures.

Ensure the vehicle is off and the battery disconnected to prevent any electrical accidents
Wear appropriate safety gear
Have a fire extinguisher nearby
Use approved containers to catch fuel spills

Step by step process

Preparation

Ensure the vehicle is parked on a flat surface, in neutral with the handbrake on. Locate the car fuse box and remove the fuel pump fuse box or relay. Then, start the engine and leave it to run for a few minutes, then switch off to depressurise the fuel lines.

Access the fuel pump strainer

Firstly, you’ll need to locate the fuel strainer. This will be found in the fuel tank of the vehicle. It’s likely to be behind an inspection cover or panel, which you’ll have to remove. Next, place an approved container beneath the fuel pump to catch any fuel spillages when you remove the unit.

Remove the old strainer

Pull away the strainer cover by releasing its fastener. It’s a good idea here to clean around the strainer and fuel lines with your cleaning cloth. Now it’s time to remove the strainer. Gently twist and pull, and allow the excess fuel to drain.

Install a new strainer

With the old strainer removed, it’s time to clean in and around the strainer head so that all dirt build up is gone before fitting the new strainer. Once ready, simply screw it into place.

Final safety checks

Make sure any fuel pipes are reconnected, then it’s time to test the vehicle. Start the car and look closely to check for any leaks. Then replace the inspection cover, making sure it is secured properly.

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