Gasoline Direct Injection (GDi) Systems

Demand for gasoline direct injection (GDi) technology is increasing - several research firms project the global GDi market will grow in excess of 10 percent annually through 2026. And when paired with electrification technologies, growth is forecast well into the next decade. As a leading OE manufacturer, Delphi is perfectly positioned to help you take advantage of this exciting opportunity. In addition to the latest generation OE technology, our GDi service program includes the OE parts, tools and know-how to service this fast-growing, high-performance technology.
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Raising the bar with OE technology

Our industry-first Multec® 14 (M14) 350-bar pressure injection system raises the bar, taking injection pressure from 200 to 350 bar. By injecting smaller droplets into the combustion chamber faster, the latest generation system delivers fewer hydrocarbons and particulate emissions – up to 70 percent - and increased fuel savings. And if that’s not enough, we’re already working on a 500 bar solution. 

OE expertise in the aftermarket

We bring our OE expertise to the aftermarket too. Our GDi service programme features our award winning Multec® GDi multi-hole fuel injectors for optimised fuel delivery and combustion, low noise GDi high pressure fuel pumps and service kits, giving you access to OE parts for a high-quality, competitive service. Understand more about the common service issues with GDi.

More than parts

We also offer a comprehensive electronic and hydraulic diagnostic solution including our proven on-board DS diagnostic tool, a high-pressure diagnostic kit, HD3000, allowing technicians to safely set and electronically control any pressure test point up to 3000 bar and a wide-ranging low-pressure tester, LP35.

Training from the OE experts

Want to learn more about GDi servicing? Our range of one day specialist training courses combines theory with practical, on-vehicle exercises and cover key topics such as component operation, common systems and faults, using high pressure gasoline and more. Giving you the skills and know-how to service the latest GDi equipped vehicles.

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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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Related product resources and downloads

Parts - Gasoline Fuel Systems
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


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. 

  1. Ensure the vehicle is off and the battery disconnected to prevent any electrical accidents 
  2. Wear appropriate safety gear 
  3. Have a fire extinguisher nearby 
  4. 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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